X is 3 times as fast as Y and is able to complete the work in 40 days less than Y. Then, the time in which they can complete the work together is

Samir drove at the speed of 45 km/h from home to a resort. Returning over the same route, he got stuck in traffic and took an hour longer, as he could drive only at 40 km/h. How many kilometres did he drive each way?

Samira, Mahira and Kiara rented a set of DVDs at a rent of ₹578. They used it for 8 h, 12 h and 14 h respectively. What is Kiara's share of rent to be paid?

The respective ratio between the present ages of Parag and Sapna is 21 : 19. Six years ago, the respective ratio between their ages was 9 : 8. How old is Lina, if her present age is 12 years less than Sapna's present age?

In a division sum, the divisor is 10 times the quotient and 5 times the remainder. If the remainder is 46, then the dividend is

If on selling 12 notebooks a seller makes a profit equal to the selling price of 4 notebooks, what is his per cent profit?

₹730 were divided among A, B, C in such a way that if A gets ₹3, then B gets ₹4 and if B gets ₹3.50 then C gets ₹3. The share of B exceeds that of C by

11 friends went to a hotel and decided to pay the bill amount equally. But 10 of them could pay only ₹60 each; as a result the 11th has to pay ₹50 extra than his share. Find the amount paid by him.

The mean temperature of Monday to Wednesday was 37°C and of Tuesday to Thursday was 34°C. If the temperature on Thursday was 4/5th that of Monday, then what was the temperature of Thursday?