5. The cost of a pen is 25.50 and cost of a pencil is 15 50. Find the ratio of the cost
of: (a) pencil to pen (b) pen to pencil (c) pencil to the total cost of pen and pencils
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Answer:
a) pencil to pen=15.50/25.50
=15.50×100/25.50×100
=1550/2550
=0.607
b) pen to pencil=25.50/15.50
=25.50×100/15.50×100
=2550/1550
=1.645
c) pencil to the total cost of pen and pencil
- Total cost of pen and pencil=25.50+15.50=41
- Therefore,15.50/41
- 15.50×100/41×100
- 1550/41
- =37.804
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