- A shopkeeper sells two types of books national books and international books .He sells national books at Rs. 18 / bookÂ and incurs at loss of 10% whereas on selling the international books at Rs. 30 / book ,he gains 20 % .Find the ratio of the national and international books such that he can gain a profit ofÂ 25% by selling the combined books at 27.5/ book ?

A)Â 5:6

B) Â 5:2

C) Â 4:5

D) Â 2:3

E) Â 4:7

- One test Â tube contains some acid and another test tube contains an equal quantity of water .To prepare a solution , 20 g of the acid is poured into the second test tube .Then , two â€“third of the so- formed solution is poured from the second tube into the first .If the fluid in the first test tube is four times that in the second ,what quantity of water was taken initially ?

A)Â 90 g

B)Â 70 g

C)Â Â 154 g

D) Â 100g

E) Â Â 180 g

- Two brands of detergents are to be combined . DetergentÂ A containsÂ 40 % bleach and 60 % soap . While detergent Â B contains Â 25 % bleach andÂ 75%Â soap . If the combined mixture is to be 35 % bleach .What % of the final mixture should be detergent A?

A)Â 30%

B)Â 45.64%

C)Â Â 20%

D) Â 32.5%

E) Â 66.67%

- A thief has stolenÂ 15 L of beer from a container and replaced with the same quantity of water .He again repeated this process 3 times .Thus the ratio of the beer become 343 :169 .Find the initial amount of beer in the container .

A)Â 90 L

B)Â 120 L

C) 140 L

D) Â 110 L

E) Â 80 L

- A tank which contains a mixture of syrup and water in ratio 15:6. 25.5 litres of mixture is taken out from the tank and 2.5 litres of pure water and 5 litres of syrup is added to the mixture. If resultant mixture contains 25% water, what was the initial quantity of mixture in the tank before the replacement in litres?
A)Â 77.7

B)Â 70.78

C) 75.6

D) Â 80.5

E) Â 76

- Ram covered a distance of 200kmÂ in 10 hrs . The first part of his journey is covered by auto ,then he hired a car Â .The speed of the auto and car isÂ 15 km/hr andÂ 30 km /hr resp. Find the ratio of distance covered by auto and car .

A)Â 3 : 4

B)Â 2 : 1

C) Â 1 : 1

D) Â 2: 3

E) Â None of these

- 9 L Â are drawn from a cask full of water and it isÂ then filled with milk , 9 L of mixture are drawn and the cask is again filled with milk .The quantity of water now left in the cask to that of the milk in it is 16 : 9 .How much does the cask hold ?

A)Â 30 L

B)Â 45 L

C)Â 35 L

D) Â 50 L

E) Â 42 L

- If Â 2 kg metal , of which (1/3) is zinc and the rest is copper , be mixed with 3 kg of metal , of which (1/4) is zinc and the rest is copper . What is the ratio of zinc to copper in the mixture ?

A)Â 11 : 43

B)Â 15 : 37

C) 17 : 43

D) 23 : 74

E) Â 18 : 52

- VesselsÂ A and B contain mixtures of milk and waterÂ in the ratios 4 : 5 and 5 : 1 resp .In what ratio should quantities of mixture be taken from A and B to form a mixture in which milk to water is in the ratio 5 : 4 ?

A)Â 5 : 2

B)Â 7 : 5

C) Â 6 : 11

D) Â 8 : 5

E) Â 9 : 4

- Two barrels conatin a mixture of ethanol and gasoline is 60%Â in the first barrel and 30% in the second barrel .In what ratio must the mixtures from the first and the second barrels be taken to form a mixture containing 50% alcohol ?

A)Â 3:4

B)Â 5:8

C) Â 1:2

D) Â 5:4

E) Â 2 :1

A shopkeeper sells two types of books national books and international books .He sells national books at Rs. 18 / book and incurs at loss of 10% whereas on selling the international books at Rs. 30 / book ,he gains 20 % .Find the ratio of the national and international books such that he can gain a profit of 25% by selling the combined books at 27.5/ book ?

A) 5:6

B) 5:2

C) 4:5

D) 2:3

E) 4:7

ans :3:2 hona chaiye mod

check that

…………..

A tank which contains a mixture of syrup and water in ratio 15:6. 25.5 litres of mixture is taken out from the tank and 2.5 litres of pure water and 5 litres of syrup is added to the mixture. If resultant mixture contains 25% water, what was the initial quantity of mixture in the tank before the replacement in litres?

A) 77.7

B) 70.78

C) 75.6

D) 80.5

E) 76

qs wrong hai kya?

the income of a trader increases in the ratio of 4:5 in the first year and 5:7 in the second year but reduction in the third year in the ratio 14:15. Find out the ratio of his income in the beginning and at the end

Solution plz

Third year bhi increase hi show Ho rha h question me .8:15 is answer. Am I right

8:5?

8/10 ty az

Que 1 ans should be 3:2

Que 6 alternate method

X/15+(200-x)/30=10

X=100

Ratio of dist 1:1

Question 2 ka koi shortcut h kya?

Nahi hai Maine waise hi kiya

8/10

Mam question 5 dusre formule se alg answer show Kr rha .is this question wrong

haan

ma’am que 1 mein 3:2 hona chahie ye 5:2 kaise hua?

typo ho gya hoga

Yes..

Ans. is 3:2

A thief has stolen 15 L of beer from a container and replaced with the same quantity of water .He again repeated this process 3 times .Thus the ratio of the beer become 343 :169 .Find the initial amount of beer in the container .

total 4 time nai hua kya sir/mam@subra mam

Three times hoga..

again 3 times plus 1 time phle b kiya?=4 times hua na?

6th question me 2;1 kya h speed k ratio ya distance ki ratio??

samj nai aaya .i think distance ki h bki sir plz conform

2:1 is time ratio. You have to multiply it by their respective speed to get the distance ratio.

Okk thanx bro

Niranjan and Prabhat are working in PMO. They are working together and take 9.5 days to finish a project. When Niranjan and Prabhat are working individually to finish half of the same project then the sum of the number of days taken by them individually is 20 days. If Niranjan is more efficient than Prabhat, how long will Prabhat alone take to do the job?

thank u

q1=ans 3:2

yo right

A tank which contains a mixture of syrup and water in ratio 15:6. 25.5 litres of mixture is taken out from the tank and 2.5 litres of pure water and 5 litres of syrup is added to the mixture. If resultant mixture contains 25% water, what was the initial quantity of mixture in the tank before the replacement in litres?

mam dekhna kha galat hai

15x+5/6x+2.5=3/1

15x+5==18x+7.5

3x==2.5 ??

x===2.5*21/3

initai;la ===

2.5*21/3+25.5

tq ,mam