Question

17. Two cars leave Delhi at the same time, travelling in opposite directions. If the average speed of one car
is 5 km/hr more than that of the other and they are 425 km apart at the end of 5 hrs, what is the average
speed of each?
thir
nur
36.
18. Two automobiles start out at the same time from cities 595 km apart. If the speed of one is
8
of the speed
9
of the other and if they meet in 7 hours, what is the speed of each?
ges 19. A motorboat goes downstream in a river and covers the distance between two coastal towns in five hours,
It covers this distance upstream in six hours. If the speed of the stream is 2 km/h, find the speed of the
boat in still water.
20. A steamer, going downstream in a river, covers the distance between two towns in 20 hours. Coming back
upstream, it covers this distance in 25 hours. The speed of water is 4 km/h. Find the distance between
the two towns.
ESU
[Hint. First find the speed of the steamer in still water.)
2
21. Ranjana's mother gave her 245 for buying New Year cards. If she got some 10-rupee cards, as many
3
1
5 rupee cards, and
as many 15-rupee cards, how many of each kind did she buy?
5
22. The enrolment in a school this year is 552. This is an increase of 15% over last year's enrolment. How
many were enrolled last year?
23. A fruit vendor buys some oranges at the rate of 5 per orange. He also buys an equal number of bananas
at the rate of 2 per banana. He makes a 20% profit on oranges and a 15% profit on bananas. At the end
of the day, all the fruit is sold out. His total profit is 390. Find the number of oranges purchased.​

Answer 1

Answer:

don't know because of class if u want urgent I can tell after 5 mins thanks for points