Question

5
Second.
16. In an auditorium, 300 tickets were sold. The total
sale of tickets, was 1250. If the tickets were of
two denominations of 2.50 and 5.00. How
many of each denomination were sold.
17. The volume of a brass piece is twice that of a
aluminium piece. The total weight of both the
pieces is 1280 g. If the weight of 1 cu. cm. of
Aluminium is 7.8 g. and that of brass is 8.9 g,
find the volume of each piece.
18. A steamer goes downstream from one port to
another in 9 hours. It covers the same distance
upstream in 10 hours. If the speed of the stream
be 1 km/hr., find the speed of the steamer in
still water and the distance between the ports.
19. The difference between the ages of two sisters is
10.
years. If 15 years ago, the elder one was twice
as old as the younger one, find their present ages.
20. Jassi inherited 12000.00. She invested part of it
at 10% and the rest at 12% p.a. simple interest. Her
annual income from these investments is 1280.00.
How much did she invest at each rate.​

Answer 1

Answer:

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