Meenu bought 4 notebooks and 3 erasers. The cost of each book. Class 7
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Meenu bought 4 notebooks and 3 erasers. The cost of each book. Class 7
Question 1.
Meenu bought 4 notebooks and 3 erasers. The cost of each book was ₹ 15.50 and each eraser was ₹ 2.75. How much did she spend in all? Class 7
Solution:
Amount of 4 notebooks = 4 × ₹ 15.50
= ₹ 62.00.
Amount of 3 erasers = 3 × ₹ 2.75
= ₹ 8.25.
So, total money spend = ₹ 62.00 + ₹ 8.25
= ₹ 70.25.
Question 2.
The thickness of a rupee coin is 1.45 mm. What is the total height of the cylinder formed by placing 36 rupee coins one over the other? Write the answer in centimeters. Class 7
Solution:
Total height = 36 × 1.45 mm.
= 36 × 0.145 centimetres
= 5.22 centimetres.