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Question

Vansh spends x daily and savesy per week. What is his income in 4weeks?


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Solution

Amount of money spent in one day =x
So, the amount of money spend in 7 days =7x

⇒Amount of money spend in 4 weeks =7x=7x×4=28x
Amount of money saved per week =y
∴ Income in 4 weeks =4×y=4y
Thus, income in 4 weeks =(28x-4y)


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