Question 1145211
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The sum is a whole number, so 1/5 of the number and 1/4 of the number are almost certain to be both whole numbers.<br>
That means the number is divisible by both 4 and 5; and that means it is divisible by 4*5=20.<br>
Then since the sum is 58, the number is probably the largest multiple of 20 less than 58.<br>
So try 40 as the number:
40+40/5+40/4 = 40+8+10 = 58