Question

A dozen eraser cost rs 16.80 find the cost of 9 eraser

Answer 1

Answer:

dozen=12= 16.80

1eraser=16.80/12

cost of one eraser =1.4

cost of 9 erasers= 1.4×9

= 12.6

Answer 2

Answer:

Cost of dozen(12) erasers = Rs.16.80

Cost of 1 eraser = 16.80/12

= Rs.1.4

.°. Cost of 9 erasers = 1.4×9

= Rs.12.6

.°. The cost of 9 erasers is Rs.12.6

Hope it helps you !!!