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Question

Xian zhong saved 40 % of his salary every month. Whe xian zhings salary reduces by 10 %, his savings became $360. What was his salary at first ?

Answer

salary at first : 100 units
savings : 40 units

salary after 10% reduction : 90 units
savings : $360

40% x 90 units = 36 units = $360
1 unit = 10
100 units = $1000

Ans : $1000.

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This is a Before After question.

          Saved    spent    total
 Before    40u 60u 100u
After 36u   90u

36u   = 360

1u = 360 ÷ 36 = 10

100u = 100 × 10 = $1000

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Original salary –> 100%

Saving –> 40% of salary

Reduced salary –> 90%

Saving –> 40% × 90%

              = 36%

36% –> $360

1% –> $10

100% –> 100 × $10

           = $1000 (ans)

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