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ICSE Class 7 Answered

A man loses 20%of his money after spending 25% of the remainder he has 480 how much money did he originally save
Asked by prakulprashar27 | 12 Sep, 2017, 08:36: PM
answered-by-expert Expert Answer
begin mathsize 16px style Let space the space original space amount space of space money space be space Rs. space straight x.
After space spending space 20 percent sign space of space money comma space amount space left equals left parenthesis 1 minus 0.20 right parenthesis straight x equals 0.80 straight x
After space spending space 25 percent sign space of space money comma space he space is space left space with space Rs. space 480.
rightwards double arrow left parenthesis 1 minus 0.25 right parenthesis cross times 0.80 straight x equals 480
rightwards double arrow 0.75 cross times 0.80 straight x equals 480
rightwards double arrow 0.80 straight x equals 640
rightwards double arrow straight x equals Rs. space 800 end style
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