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Question

On Monday morning Mr. Smith had a certain amount of money that he planned to spend during the week. On each subsequent morning, he had one fourth the amount of the previous morning. On Saturday morning, 5 days later, he had 1.HowmanydollarsdidMr.SmithoriginallystartwithonMondaymorning?(Disregardthe sign when gridding your answer.)

A
1024
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B
2025
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C
1520
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D
1890
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Solution

The correct option is A 1024
Lets denote the certain amount of money he had on Monday as x
Monday = x
Tuesday = x4 (one-fourth of previous morning)
Wednesday = x16
Thursday = x64
Friday = x256
Saturday = 1$
Now one-fourth of Friday morning's amount = 14x256=x1024=1$
If 1=x1024. Then x=1024
Therefore, On Monday morning, he had 1024.$

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