If bananas are bought at the rate of 7 for Rs. 1, how many must be sold for Rs. 1 to gain 40%?
Answer & explanation
Correct answer: option 4
SP of 7 bananas = (100 + 40) % of Rs. 1
= \(\frac{140}{100}\) = \(\frac{7}{5}\) Rs.
No. of bananas sold for Rs. 1 = \(\frac{7}{7}\) × 5
= 5