Question

the cost of one book is rs 15 find the cost of 12 such books
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Answer 1

Answer:

RS.180

Step-by-step explanation:

COST OF ONE BOOK = RS.15

THEREFORE,

COST OF 12 BOOKS = RS.15 × 12

= RS.180

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Answer 2

Answer:

180 rupees

Step-by-step explanation:

1=15

12=x

let, assume x for price of 12 books

cross multiply

1×x=15×12

X=180

so, price of 12 book is 180rupees