Question : If the cost of 3 dozen bananas is Rs. 180, what is the cost of 7 dozen bananas?
Option 1: Rs. 490
Option 2: Rs. 210
Option 3: Rs. 420
Option 4: Rs. 350
Correct Answer: Rs. 420
Solution :
The cost of 3 dozen of bananas = Rs. 180
The cost of 1 dozen of bananas = $\frac{180}{3}$ = Rs. 60
Cost of 7 dozens of bananas = 7 × 60 = 420
Hence, the correct answer is Rs. 420.
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