Question

if 7pen cost is 4.20 then what is the cost of 5 pen

Answer 1

7pen=4.20
1pen=.6
5pen=3.0

Answer 2

7 pens = Rs 4.20

Find the cost of 1 pen:

7 pens = Rs 4.20

1 pen = 4.20 ÷ 7 = Rs 0.60

Find the cost of 5 pens:

1 pen = Rs 0.60

5 pens = 0.60 x 5 = Rs 3.00

Answer: 5 pens cost Rs 3.00