Question

fruit seller bought bananas at 8.40 per dozen. at what price per hundred must he sell themso as to earn a profit of 15%​

Answer 1

Answer:

$c.p \: of \: 12 \: banana =8.4 \\ c.p \: of \: 1\: banana = \frac{8.4}{12} = 0.7 \\ c.p \: of \: 100\: banana = 0.7 \times 100 = 70$

$s.p = (\frac{100 + 15}{100} ) \times 70 \\ = \frac{115}{100} \times 70 = 80.50$