Question

7. The ratio of length to breadth of a rectangular sheet is 9 : 5. If the breadth of the sheet is 15 cm, find its
length
8. The cost of 5 kg apples is 2195. How many kilograms of apples can be purchased for 3512​

Answer 1

Answer:

7.

let the length be = x

according to question

9/5 = x/15

=> 27= x

hence length of the rectangular sheet is 27cm .

8. cost of 5kg apples = 2195

cost of 1 kg apples = 2195/5

= 439

kgs of apples that can be purchased for 3512 = 3512/439 =8kgs

Answer 2

7-. Answer

Let the length of the field be 9x and breadth be 5x.

9x×5x=14580

45x

2

=14580

x

2

=324

x=18

Hence, length=162m and breadth=90m.

Perimeter = 2(l+b)=2(162+90)=2(252)=504m

Therefore,

Cost of fencing = 504×3.25=1638 Rs.

8-. Using unitary method :-

5 kg apple → 600 Rs

1 kg apple →

5

600

= 120 Rs

27 kg apple →120×27=3240 Rs.

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