1. If the cost of 10 pens cost is Rs. 80. Find the cost of 15 pens
Answers
Answered by
3
Answer:
Rs. 120
Step-by-step explanation:
If the number of pens increases, the cost also increases. So, we will use direct proportionality, here.
10 pens = Rs. 80
1 pen = Rs. 80/10 = Rs. 8
15 pens = Rs. 8 × 15 = Rs. 120
Answered by
1
Answer:
Cost of 10 pens = Rs 80
.•. Cost of one pens = 80 ÷ 10 = Rs8
.•. Cost of 15 pens = Cost if one pens × number of pen
= 15 × 8
= Rs 120 /-
.•. Cost of 15 pens is Rs 120/-
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