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Question 11 Mark
A pharmaceutical manufacturer bought 0.25 quintal of hirada, a medicinal plant, for Rs 9500. What is the cost per quintal of hirada? (1 quintal = 100 kg)
Answer
Cost of 0.25 quintal of hirada = Rs 9500
∴ Cost of 1 quintal of hirada = 9500 ÷ 0.25
$=9500 \div \frac{25}{100}=9500 \times \frac{100}{25}=\frac{950000 \times 4}{25 \times 4}=\frac{38,00,000}{100}$
= Rs 38,000
∴ Cost per quintal of hirada is Rs 38,000.
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Question 21 Mark
Pradnya exercises regularly by walking along a circular path on a field. If she walks a distance of 3.825 km in 9 rounds of the path, how much does she walk in one round?
Answer
Total distance walked in 9 rounds = 3.825 km
∴Distance walked in 1 round = 3.825 4 ÷ 9
$=\frac{3825}{1000} \div \frac{9}{1}=\frac{3825}{1000} \times \frac{1}{9}=\frac{425}{1000}$
= 0.425 km
∴ Total distance walked in 1 round is 0.425 km.
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