Question

If the cost of 20 pens is RS.180 ,then calculate the cost of 15 pens

Answer 1

135 rupees

given,

cost of 20 pens =180

so. cost of 1 pen ====180/20==9

here. cost of one pen =9 rupees

so. cost of 15 pens ,=15*9==135 rupees

Answer 2

Answer:

Rs. 135

Step-by-step explanation:

Cost of 20 pens= Rs. 180

Cost of 1 pen= 180/20

= Rs.9

Cost of 15 pens= 9X 15

= Rs.135