Question

cost of one pen is 10 then find the cost of 13 pens.

Answer 1

cost of one pen=10
cost of 13 pens=cost of one pen*13
cost of 13 pens =10*13

So,cost of 13 pens=130

hope it helps...!!!

Answer 2

cost of one pen_10
no of pen _13_?
1=10
13=? (Cross multiple)
x=130