**Directions(1-5):** What value will come in place of question mark ‘?’ in the following questions.

- ? = 15% of 64% of 75% of 6000
480452400432414Option D

? = 15% of 64% of 75% of 6000

=>?= 432 - ?^2 = 8765 – 7685 + 63*15
3026405145Option E

?^2 = 8765 – 7685 + 63*15

=>?^2 = 1080 + 945

=>?^2 = 2025

=>? = 45 - 32^2 – 83% of 900 – 9*11 = ?
150178162148153Option B

32^2 – 83% of 900 – 9*11 = ?

=>? = 1024 – 747 – 99

=>? = 178 - 14% of ? = 9% of 280
120130180160170Option C

14% of ? = 9% of 280

=>? = 180 - ?^1/2 = 16*14 – 12*18 + 352 /22
520500555576540Option D

?^1/2 = 16*14 – 12*18 + 352 /22

=>?^1/2 = 224 – 216 + 16

=>?^1/2 = 8+16

=>?^1/2 = 24

=>? = 576 - The average age of 30 students is 16 years. If the age of the teacher is also included then the average age increased by 1 year, find the age of the teacher.
4032475650Option C

Teacher age is T years. So, 30*16 + T = 31*17

=>T = 47 years - P,Q and R invested Rs. 6000 , Rs.4000 and Rs.8000 in a business. P left a business after 6 months.If after one year there was a gain of Rs.5200.Then what will be the share of P?
10001200115012201040Option E

P Q R

6000×6 4000×12 8000×12

3 4 8

P:Q:R = 3:4:8

P share = 5200×(3/15) = 1040 - A 50 litre of mixture contains milk and water in the ratio 2:3. How much milk must be added to the mixture so that it contains milk and water in the proportion of 3:2.
2520303245Option A

(20 + x)/30 = 3/2

=>x = 25 - A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
3.202.271.501.252.20Option D

Downstream =(1x 60)/10 = 6 kmph

Rate upstream = 2 km/hr.

Speed in still water =(6 + 2) /2= 4 kmph

Time = 5/4 = 1.25 hrs. - A bag contains 6 red balls and 8 green balls. Two balls are drawn at random one after one with replacement. What is the probability that-

Both the balls are green

12/4713/4914/4716/4910/41Option D

P = (8/14)*(8/14) = 16/49