5.A sitting room of 40m2 occupies 25% of a house.What is the size of the house?
9.The legth of a pieceof cloth shrinks by 10% after washing.How long should Jane buy if she wants to have 1.8m of cloth after washing?
Math Percentages
2008-02-24 8:13 pm
回答 (1)
2008-02-24 10:20 pm
✔ 最佳答案
5.let x be the size of the house0.25x=40
x=160
9.let x be the size she should buy
(1-10%)x=1.8
0.9x=1.8
x=2
收錄日期: 2021-04-13 19:08:54
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