1. The difference between two numbers is 15. Four times the smaller plus six times the larger is 270.Find the larger
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x-y=15 --- (1)
4y+6x=270---(2)
multiplying (1) × 6
we get,
6x-6y=15×6 -----(3)
substracting 2 from 3
we get
10y=-180
y=-18
therefore, x=33
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