SOLUTION: 8 pears and 2 oranges cost Rs117. A pear cost Rs4 more than an orange. What is the cost of a pear?

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Question 987680: 8 pears and 2 oranges cost Rs117. A pear cost Rs4 more than an orange. What is the cost of a pear?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
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X=cost of orange; Y=cost of pear=X+Rs4
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8Y+2X=Rs117 Substitute for Y.
8(X+Rs4)+2X=Rs117
8X+Rs32+2x=Rs117
10X=Rs85
X=8.5 An orange costs Rs8.5
Y=X+Rs4=Rs8.5+Rs4=Rs12.5
ANSWER: A pear costs Rs12.5.
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CHECK:
8Y+2X=Rs117
8(Rs12.5)+2(Rs8.5)=Rs117
Rs100+Rs17=Rs117
Rs117=Rs117