A pineapple costs Rs. 7 each. A watermelon costs Rs. 5 each. Z spends Rs. 38 on these fruits. The number of
pieapples purchased is
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Answer:
x=4
Step-by-step explanation:
Let the number of pineapples and watermelons be x and y respectively.
Then, 7x+5y=38 or 5y=(38−7x) or y= 38−7x/5
Clearly, y is a whole number, only when (38−7x) is divisible by 5.
This happens when x=4.
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Answer:
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