Question

Cost of notebook is rs 90 per dozen .cost of 18 notebooks is

Answer 1

Answer:

cost of 12 notebook =90

cost of 1 notebook =90/12

cost of 18 notebook=90/12×18=135

Answer 2

1 DOZEN = 12 THINGS

GIVEN: COST OF NOTEBOOK IS ₹90 PER DOZEN

WHICH MEANS- 12 NOTEBOOKS COST ₹90

THEN : COST OF 1 NOTEBOOK= 90 ÷ 12 = ₹7.5

SO COST OF 1 NOTEBOOK = ₹7.5

NOW : COST OF 18 NOTEBOOKS = 18 X 7.5 = ₹135.0

HENCE, THE COST OF 18 NOTEBOOKS IS ₹135

ANSWER