Monday, September 30, 2013

There are 2 numbers whose sum is 53. 3 times the smaller number is equal to 19 more than the larger number. Which are the numbers?

assume that the fsmaller number =S and the larger number is=L


then, S+L= 53....... (1)


3 times the smaller number = 19 more than the larger number


==> 3 S = 19 + L ........ (2)


Now, combining equation (1) and (2) we have:


S+L = 53


3S = 19  + L ==> L = 3S -19


substitute in eqution (1),


 S + (3S- 19) = 53


 4S - 19 = 53


4S = 72     divide by 4


S = 72/4 = 18


and L = 3(18)- 19 = 35

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