a student was asked to divide a number by 5/4 . by mistake he divided the given number by 4/5. is answer exceeds the correct answer by 54. find the number
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ANSWER = 80
Step-by-step explanation:
Let the given number be x,
Original answer = 4/5x
Wrong answer = x/1 / 4/5
= x multiplied by 5/4
= 5x/4
So,
5x/4 = 36 + 4x/5
5x/4 - 4x/5 = 36
(25x - 1) / 20 = 36
9x/20 = 36
x = (36 multiplied by 20) / 9
So, x = 80
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