SOLUTION: rahul spends rupees y daily and saves rupees z per week. what is his income for three weeks

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Question 1013210: rahul spends rupees y daily and saves rupees z per week. what is his income for three weeks
Answer by ikleyn(52781) About Me  (Show Source):
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rahul spends rupees y daily and saves rupees z per week. what is his income for three weeks
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21*y + 3*z = 21y + 3z.