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Q.4 Find:
(a) 15% of 250
(b) 1% of 1 hour
(c) 20% of Rs. 2500
(d) 75% of 1 kg

Answer :

(a) 15% of 250 =\(\frac{15}{100} \)×250=\(\frac{75}{2} \)=37.5 (b) 1% of 1 hour = 1% of 60 min =1% of( 60 × 60 ) sec = 1% 3600 sec = \(\frac{1}{100} \)×3600 min=36 sec
(c) 20% of Rs. 2500 = \(\frac{20}{100} \) × 2500 = Rs. 500
(d) 75% of 1 kg = 75% of 1000g = \(\frac{75}{100} \) ×1000 = 750 g

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