Question

x+y
x- y
VIII
3x + y
3xy
4.
15
5
1
x- y
1
2(3x + y)
7100
2(3x - y)
8
Formulate the following problems as a pair of equations and then find their solutions.
A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours it can
go 40 km upstream and 55 km downstream. Determine the speed of the stream and
that of the boat in still water.
Rahim travels 600 km to his home partly by train and partly by car. He takes 8 hours
if he travels 120 km by train and rest by car. He takes 20 minutes more if he travels
200 km by train and rest by car. Find the speed of the train and the car.
i 2 women and 5 men can together finish an embroidery work in 4 days while 3 wome
and 6 men can finish it in 3 days. Find the time taken by I woman alone and I ma
alone to finish the work.
OPTIONAL EXERCISE
[This exercise is not meant for examination]​

Answer 1

Answer:

"A" (and any subsequent words) was ignored because we limit queries to 32 words.

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