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Interview Mental Math - 16

Interview Mental Math - 16


Interview Mental Math
1. In a class of 30 students, the average age is 10 years, if the teacher age is also included, the average age increases by one year. The teacher’s age is?

a. 54 years
b. 32 years
c. 51 years
d. 41 years
Interview Mental Math
2. Combined age of two brothers is 20 years. I there is a difference of 2 years between their ages, find out the age of younger brother?

a. 8 Years
b. 11 Years
c. 7 Years
d. 9 Years
Interview Mental Math
3. What is the profit in percent, if a book costing Rs.100 is sold for Rs.110?

a. 11.5%
b. 10%
c. 9%
d. 11%
Interview Mental Math
4. Ali invested Rs.1000 for 1 year. At what rate he will get Rs.200 as a profit?

a. 20%
b. 22%
c. 16%
d. 11%
Interview Mental Math
5. The average of three numbers is 6. If the average of first two numbers is 7 then find the third number?

a. 4
b. 3
c. 3.5
d. 4.5
Interview Mental Math
6. A bicycle costing Rs.570 is sold at Rs.600. What is the profit percentage?

a. 4.75%
b. 11.1%
c. 5.25%
d. 5%
Interview Mental Math
7. Click the correct answeDo not use a calculator: 35 + 18 = 29 + ?

a. 21
b. 22
c. 32
d. 24
8. What is 50% of 50?
Interview Mental Math a. 20
b. 25
c. 35
d. 30



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