Total distance covered by the car in 4 hours = 52 x 4 = 208 km Time taken by the car in the return journey = 0.80 x 4 = 3.2 hours Average speed = Total distance covered ÷ Total time taken Average speed of the car = (208 x 2) ÷ (4 + 3.2) ~ 57.8 km/h
A purchases a toy from B for ₹120 and sells it to C, earning a profit of 25%. If B also made a profit of 20% on selling the toy, what is the differenc...
The average wage of a group of 23 labourers is Rs. 460. If 4 persons receiving average wage of Rs. 350 leave the group and 2 persons receiving average w...
One type of liquid contains 15% of benzene, the other contains 20% of benzene. A can is filled with 6 parts of the first liquid and 4 parts of the secon...
In what ratio coffee at 290 Rs/kg should be mixed with the coffee at 365 Rs/kg so that after mixture its rate become 325 Rs/kg if the quantity of 1st ty...
A, B and C alone can complete a work in 20, 30 and 25 days respectively. All of them started working together but after 4 days from start A left the job...
A frustum of a square pyramid has base edges of 10 cm and 6 cm, and a height of 8 cm. What is its volume? Calculate approximate value
Cost of two types of pulses is Rs.24 and Rs, 29 per kg, respectively. If both the pulses are mixed together in the ratio 2:3, then what should be the pr...
There are two buckets X and Y containing mixture of milk and water in which concentration of milk is (a-9)% and (a+15)%, respectively. They are mixed to...
Cost of two types of pulses is Rs.12 and Rs, 17 per kg, respectively. If both the pulses are mixed together in the ratio 2:3, then what should be the pr...
A jar initially contains a certain quantity of buttermilk. After removing 8 liters of the mixture and replacing it with cream, this process is repeated ...
