Math and Logic Quiz

I bought a book for Rs 60 , I sold off to a friend for Rs 70 but after a while i felt sorry , that i sold it and bought it back for Rs 80, how much loss did I incur?

• 10

• 25

• 20

• 15

If A and B can do a piece of work in 7.5 days. If B works 1/2 of work and remaining work was completed by A, taking total time of 20 days to complete the work. If b is more efficient then B can do work in how many days?

• 12

• 20

• 25

• 10

Rajesh can finish 1/5 of his home work in one hour. Seema can finish 3/7 of her homework in 90 minutes and Ramya can finish 3/4 of her homework in three and a half hours. If all of them start their home work at 12.00 PM and can go to play as soon as they all finish their homework. When can they start to play, if they take a break at 3.30 PM for 30 minutes?

• 5:45

• 5:30

• 6:00

• 4:30

Ajay walked at 10 kmph for certain part of the journey and then he took an auto for the remaining part of the journey travelling at 30 kmph. If he took 10 hours for the entire journey, what part of journey did he traveled by auto if the average speed of the entire journey be 18 kmph?

• 132km

• 150km

• 120km

• 200km

A boat can travel with a speed of 16 km/hr in still water. If the rate of the stream is 5 km/hr, then find the time taken by the boat to cover the distance of 84 km downstream.

• 4 hour

• 5 hour

• 3 hour

• 10 hour

Rahul is 15 years elder than Rohan. If 5 years ago, Rahul was 3 times as old as Rohan, then find Rahul's present age.

• 27.5 years

• 30 years

• 28 years

• 22.5 years

When the integer n is divided by 8, the remainder is 3. What is the remainder if 6n is divided by 8?

• 9

• 3

• 18

• 2

If P $ Q means P is the brother of Q; P # Q means P is the mother of Q; P * Q means P is the daughter of Q in A # B $ C * D, who is the father?

• D

• B

• C

• Data Inadequate

In a family, there are six members A, B, C, D, E and F. A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died. How is E related to C ?

• Sister

• Daughter

• Cousin

• Mother

Prakash bought a bike at 20% discount on its original price. He sold it with 30% increase on the price he bought it. The new sale price is by what percent more than the original price?

• 5%

• 4%

• 22%

• None of these