Question 11
5 pencils and 4 erasers cost Rs 13 whereas 9 pencils and 5 erasers cost Rs 19 Then the price of 6 pencils and 3 erasers is
Solution
5p + 4e = 13
9p + 5e = 19
solving for p, we get p = 1
e = 2
So, 6 pencils and 3 erasers cost
6 x 1 + 3 x 2 = 12
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