Question

the cost of 2 pen is 67 find the cost of 10 pens.

Answer 1

the cost of 2 pens is 67 .
the cost of 10 pens will be 67×5=rupees 335

Answer 2

2 pens -------------> 67
10 pens ------------> ?

Cross multiplying,

67 x 10 / 2 = Rupees 335.