Question

If the cost of 15 pens is Rs. 75. Find the cost of 9 pens...class 8 solution maths .​

Answer 1

Answer:

the cost of 1 pen = 75/15= rs. 5

then, the cost of 9 pens = 9×5= rs. 45

Answer 2

First find the cost of one pen :-

amount / no. = 75/15 = 5 rs

Now the cost of nine pens :-

5 x 9 = 45 rs