Question

the price of a book is 5 rupees less than trice the price of a pen If book cost 40 rupees what does a pen cost
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Answer 1

Answer:

15 rupees

let it be x

so, 5- 3x = 40

3x= 40+5

3x= 45

x= 45 ÷ 3

∴ x= 15 rupees.