1. The cost of 5 sharpeners and 14 pencils is Rs.56. What would be the cost of 15 sharpeners and 42 pencils ?






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  • By: anil on 05 May 2019 01.19 am
    Given , The cost of 5 sharpeners(S) and 14 pencils(P) is Rs 56. i.e. 5S + 14P = 56 ...... (1) We need the cost of 15 sharpeners and 42 pencils. multiplying equ.(1) with 3 on both sides .
    we get , 15S + 42P = 56*3 = 168 Hence, none of these.
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