Answer:
a. The cost of 5 erasers = 35
The cost of 1 eraser = 35/5
= ₹7
The cost of 30 erasers= 7 x 30
= ₹210
b. The cost of 7 staplers= 110
The cost of 1 stapler = 110/7
= 15.7142857
The cost of 8 staplers = 15.7142857 x 8
The cost of 8 staplers = ₹125.714286
c. The cost of 4 sharpners = 3
The cost of 1 sharpner = 3/4
= ₹0.75
The cost of 9 sharpners= 0.75 x 9
= 6.75.
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Answers & Comments
Answer:
a. The cost of 5 erasers = 35
The cost of 1 eraser = 35/5
= ₹7
The cost of 30 erasers= 7 x 30
= ₹210
b. The cost of 7 staplers= 110
The cost of 1 stapler = 110/7
= 15.7142857
The cost of 8 staplers = 15.7142857 x 8
The cost of 8 staplers = ₹125.714286
c. The cost of 4 sharpners = 3
The cost of 1 sharpner = 3/4
= ₹0.75
The cost of 9 sharpners= 0.75 x 9
= 6.75.