plzzz help...
if 24 men can lay a road of length 15km in 18days, in how many days will 21men lay a road 35km long?
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This question is of inverse proportion
so product remains constant
let required days be x
24 × 15 × 18 = constant
21 × 35 × x = constant
so
24 × 15 × 18 = 21 × 35 × x
x = 24 × 15 × 18 /21 × 35
x = 8 × 3 × 18 / 7 × 7
x = 8 ( approximately )
so product remains constant
let required days be x
24 × 15 × 18 = constant
21 × 35 × x = constant
so
24 × 15 × 18 = 21 × 35 × x
x = 24 × 15 × 18 /21 × 35
x = 8 × 3 × 18 / 7 × 7
x = 8 ( approximately )
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