Question

15 postcards cost rs.71/2.The cost of 36 postcards is
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Answer 1

Answer:

71 × 18 = 1278

Step-by-step explanation:

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Answer 2

Answer:

GIVEN :

Cost of 15 postcards = Rs.71/2

Cost of 1 postcard = Rs. 71/2 ÷ 15

= 71/30

Cost of 36 postcards = 36*71/30

= 12*71/10

= 852/10

or

= 85.2

FINAL ANSWER : 85.2 or 852/10