Question

In a rectangle, if the length is increased by 3 metres and breadth is decreased by 4 metres,
the area of the rectangle is reduced by 67 square metres. If length is reduced by 1 metre
and breadth is increased by 4 metres, the area is increased by 89 sq. metres. Find the
dimensions of the rectangle.
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Answer 1

Answer:

Let 40 % acids in the solution be x litres

Let 60 % of other solution be y litres

Total Volume in the mixture = x + y

Given volume is 10 litres

x + y = 10 ---(i)

Also,  

So, 40 x + 60 y =500 or 2x+3y =25 …(ii)

Solving (i) and (ii) we get x = y = 5 litres

Step-by-step explanation:

Answer 2

Step-by-step explanation:

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