Solution:
Given, Cost of 5 pens = Rs. 20.According to the unitary method, cost of one pen = .
Cost of one pen =
Cost of one pen = Rs. 4
Hence, option 1 is correct.
MathematicsIf the cost of 5 pens is Rs. 20, then what is the cost of a pen?
If the cost of 5 pens is Rs. 20, then what is the cost of a pen?
According to the unitary method, cost of one pen = .
Cost of one pen =
Cost of one pen = Rs. 4
Hence, option 1 is correct.
