17. Two sides of rectangle are 20 cm and 10 cm. They are increased in the ratio 2:3 and 3: 7. Find
the percentage increase in its area.
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Answered by
5
Answer:
new length/20 = 3/2
new length = 30
new width/10 = 7/3
new width = 70/3
new area = 30(70/3) = 700
old area = 20(10) = 200
increase = 500
percentage increase = 500/200 * 100% = 250%
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Answered by
4
Answer:new length/20 = 3/2
new length = 30
new width/10 = 7/3
new width = 70/3
new area = 30(70/3) = 700
old area = 20(10) = 200
increase = 500
percentage increase = 500/200 * 100% = 250%
hope it helps u
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