7. Three numbers are in ratio 3:4:5. The sum of their cubes is 7,29 000. Find the numbers.
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Step-by-step explanation:
Let the no.s be 3x,4x,5x then,
9x
2
+16x
2
+25x
2
=1250
⟹50x
2
=1250
⟹x=5
Sum of numbers =3x+4x+5x=12x=12×5=60
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