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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

(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