The cost of pen is thrice the cost of pencil write an expression to find the cost of pen taking the cost of pencil as P. What will be the cost of pen if the cost of pencil is 15 rupees?
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Answer:
45 rupees
Step-by-step explanation:
cost of pen = thrice the cost of pencil (P)
= P×3
= 15×3
= 45
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