Question

A man sold an article for Rs 660 and gained 1/10 th of it's cost price. Find (¡) it's cost price (¡¡) the gain percent
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Answer 1

(i)

SP = ₹ 660

Gain% = 10%

If,

SP = ₹ 110 , then CP = ₹ 100

If,

SP = ₹ 1 ,

$then \: cost \: price \: = rs \: \frac{100}{110}$

If, SP = ₹ 660 ,

$then \: cost \: price \: = rs \: 660 \times \frac{100}{110} \\ = rs \: 660 \times \frac{10}{11} \\ = rs \: \frac{6600}{11} \\ = rs \: 600$

(ii)

$gain \: = \frac{1}{10} \\ = 10\%$

Therefore, Gain% is 10%