Question 138

The cost of 5 pars and 8 pencils is 31. What would be the cost of 15 pens and 24 pencils ?

Solution

let the cost pencil be p Rs per pencil and cost of pars be a Rs per par

given that , 5a + 8p = 31

To find : 15a + 24p

= 3(5a + 8p)

=3 x 31

= 93

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