Question 51
The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is
Solution
Let the three consecutive natural numbers each divisible by 5 be $$(5x-5),(5x),(5x+5)$$
Sum = $$(5x-5)+(5x)+(5x+5)=225$$
=> $$15x=225$$
=> $$x=\frac{225}{15}=15$$
$$\therefore$$ Largest number = $$5(15)+5=75+5=80$$
=> Ans - (D)
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