Question

find the greatest 4 digit number which divided by 15 20 and 25

Answer 1

hey here is ur answer

9900 is the greatest 4 digit number which is divisible by 15,20,25

15---- 660
20---495
25-----396

I hope this helps you

Answer 2

Find LCM of 15, 20 and 25

15 = 3×5
20 = 2×2×5
25 = 5×5

LCM = 2×2×3×5×5 = 300
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Greatest 4 digit number = 9999

Divide 9999 by 300

9999 ÷ 300 = 33 quotient and 99 remainder.
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Subtract the remainder so that the number will be divisible by the LCM of the numbers.

9999 - 99 = 9900

Thus the greatest 4 digit number divisible by 15, 20 and 25 is 9900