10. The cost of levelling a rectang...
Question

# 10. The cost of levelling a rectangular ground at 1.25 per m' is 900. If the length of the ground is 30 m, then the width is (1) 6 m (2) 18 m (3) 24 m (4) 36 m

11th - 12th Class
Maths
Solution
184
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( begin{aligned} text { 10. (3) Area of ground } &left(frac{900}{125}right)=720 mathrm{m}^{2} =frac{text { Total cost of levelling }}{text { Rate }} & text { Area of ground } text { : } text { Breadth of ground } & text { Length of ground } =frac{720}{30} mathrm{m}=24 mathrm{m} end{aligned} )