Question 83

The ratio of three numbers is 3 : 6 : 8. If their product is 9216, then what is the sum of the three numbers?

Solution

Let the numbers be $$3x,6x$$ and $$8x$$

Product = $$3x\times6x\times8x=9216$$

=> $$x^3=\frac{9216}{144}=64$$

=> $$x=\sqrt[3]{64}=4$$

$$\therefore$$ Sum of the numbers = $$3x+6x+8x=17x$$

= $$17\times4=68$$

=> Ans - (D)

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