- The speed of boat in still water and the speed of stream are 10 km/hr and 2 km/hr respectively. Find the time required to cover a distance of 120 km in both downstream speed and upstream speed.
15 hours10 hours20 hours25 hours30 hoursOption D

Downstream speed of the boat = 10 + 2 = 12 km/hr

upstream speed of the boat = 10 – 2 = 8 km/hr

Time = 120/12 + 120/8 = 10 + 15 = 25 hours. - Aju and Viju can do a piece of work in 20 days and 30 days respectively. If they worked for alternate days and work starts from Aju, then how many days are required to complete the total work ?
24 days20 days15 days18 days25 daysOption A

LCM of 20 and 30 = 60

Total work = 60

efficiency of Aju = 60/20 = 3

efficiency of Viju =60/30 = 2

They worked for alternate days and start from Aju 2 days work of Aju and Viju = 3 + 2 = 5 work

12 (2 days) = 12 (5 work)

Time required to complete the work = 2 * 12 = 24 days - A,B,C enter into a partnership business investing rs.25000, rs.28000 and rs.32000 respectively. Profit of the business at the end of the one year is rs.17000, then what is the profit share of A in the business ?
80008500560050006400Option D

Profit sharing ratio of A, B and C = 25000 : 28000 : 32000 = 25 : 28 : 32

Total profit = 17000

Profit share of A = 17000 * 25/85 = 5000 - The sum of the present age of Aman and Suman is 50 years. If the ratio of ages of Aman and Suman after 5 years be 3 : 2. Then, find the age of Aman after 4 years from now.
3835404528Option B

Let the ages of Aman and Suman After 5 years be 3x and 2x respectively.

Present age of Aman = (3x – 5) years

Present age of Suman = (2x – 5) years

(3x – 5) + (2x – 5) = 50

5x – 10 = 50

x= 12

present age of Aman = (3x – 5) = 31

age of Aman after 4 years = 31 + 4 = 35 years - A shopkeeper is selling a watch at a discount of 20% on the marked price. If the marked price is 40% above the cost price and the watch was sold for rs.448, then what is the cost price of the watch ?
500400320360480Option B

Let CP of watch = 100x

MP of watch = 100 * 140/100 = 140x

SP of watch = 140 * 4/5 = 112x

SP of watch = rs.448

CP of watch = 448/112x * 100x = 400 - 18, 89, 443, 2212, 11056, ?
54280552755042474259528Option B

The series is, (*5 – 1), (*5 -2), (*5 – 3), (*5 – 4), (*5 – 5) - 2, 3, 11, 38, 102, ?
128225325227445Option D

The series is + 1^3, + 2^3, + 3^3, + 4^3, + 5^3 - 125, 149, 197, 269, 365, ?
485420385525565Option A

The series is +24, +48, +72, +96, +120 - 24, 25, 22, 27, ? , 29
2532382035Option D

The series is +1, -3, +5, -7, +9 - 5, 30, 150, 600, 1800, ?
25004200360032001800Option C

The series is *6, *5, *4, *3, *2

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