Mathematics Quiz

A man spent 60% of his salary on household expenses, 20% of his salary on rent and out of remaining salary, he donated 80% to a trust. If he is left with ₹20,000, then what is his salary?

• 500000

• 550000

• 525000

• 530000

Ram and Shyam run a race between points A and B, 5 km apart. Ram starts at 9 a.m. from A at a speed of 5 km/hr, reaches B, and returns to A at the same speed. Shyam starts at 9:45 a.m. from A at a speed of 10 km/hr, reaches B and comes back to A at the same speed. 1. At what time do Ram and Shyam first meet each other?

• 10:00 am

• 10:10 am

• 10:20 am

• 10:30 am

One year ago, the ratio of Gaurav and Sachin’s age was 6: 7, respectively. Four years hence, the ratio would be 7: 8. How old is Sachin?

• 30

• 25

• 36

• 40

Dev completed the school project in 20 days. How many days will Arun take to complete the same work if he is 25% more efficient than Dev?

• 10

• 12

• 16

• 15

A can contains a mixture of two liquids A and B is the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?

• 10

• 20

• 21

• 25

A journey of 300 km takes two hours more when the speed of a care is reduced by 5km/hr. What is the original speed of the car?

• 30

• 40

• 70

• 80

A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for Rs. 3200. With the help of C, they completed the work In 3 days. How much is to be paid to C?

• 375

• 400

• 600

• 800

Perimeter of a Δ with integer sides is equal to 15. How many such triangles are possible?

• 7

• 6

• 8

• 5

Three unbiased coins are tossed. What is the probability that atmost one head occurs?

• 0.50

• 0.30

• 0.75

• 0.25

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?

• 4

• 10

• 15

• 16