1)Sum of two numbers is 95.If one exceeds the other number by 15,find the numbers. 2)Solve x+7 -8x/7 = 17/6 - 5x/8 3)Rahul,s age is three times his son's age.Ten years ago he was five times his son's age.Find their present ages. 4) A number consists of two digits whose sum is 8.If 18 is added to the number,its digit are reversed.Find the number.
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1. let the numbers be X and Y
a/c to problem X+Y=95 and X+15=Y
substitute Y=X+15 in X+Y=95
that is X+X+15=95
2X+15=95
2X=80
X=40
substitute X in Y=X+15 then we get Y=55.
therefore X=40 & Y=55
a/c to problem X+Y=95 and X+15=Y
substitute Y=X+15 in X+Y=95
that is X+X+15=95
2X+15=95
2X=80
X=40
substitute X in Y=X+15 then we get Y=55.
therefore X=40 & Y=55
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