Q.7 Cost of 4 dozen bananas is Rs 180. How many bananas can be purchased for Rs 90?

Number of bananas bought in Rs180 = 4 dozens
= 4 × 12 = 48 bananas
Number of bananas bought in Rs 1 = \(\frac{48}{180} \)
So, number of bananas bought in Rs 90 = \(\frac{48}{180} \) × 90 = 24 bananas
\(\therefore \) 24 bananas can be purchased in Rs 90