Maths problem: How to do, thanks?
回答 (1)
2020-08-12 8:52 pm
✔ 最佳答案
Let length of rectangle = y cm=> its width = 18-y
new length = 1.4y
new width = 0.5(18-y)
1.4y - 0.5(18-y) = 10
1.9y = 19
∴ y = 10 cm
So, original length = 10 cm
& original width = 0.5(18-10) = 4 cm
收錄日期: 2021-04-24 07:55:45
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