Q.5 Find the whole quantity if
(a) 5% of it is 600
(b) 12 % of it is? 1080
(c) 40% of it is 500 km
(d) 70% of it is 14 minutes
(e) 8% of it is 40 litres


Answer :

(a) 5% of x = 600 = \(\frac{5}{100} \)×x = 600
Or, x = \(\frac{600×100}{5} \) = 12000
(b) 12% of x = 1080 = \(\frac{12}{100} \) × x = 1080
Or, x = \(\frac{1080×100}{12} \) = 9000
(c) 40% of x =500 = \(\frac{40}{100} \) × x = 500
Or, x = \(\frac{500×100}{40} \) = 1250 km
(d) 70% of x = 14min = \(\frac{70}{100} \)×x = 14min
Or, x = \(\frac{14×100}{70} \) = 20
(e) 8% of x = 40 liters = \(\frac{8}{100} \)×x = 40 liters
Or, x = \(\frac{40×100}{8} \) = 500 litres

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