A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence the father's present age is --

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

ব্যাখ্যা ও সঠিক সমাধান

উত্তর: 45

Let the present age of the father and his son be F and S respectively. Now, F = 3S Again, F + 15 = 2(S + 15) or, 3S + 15 = 2S + 30 or, 3S - 2S = 30 - 15 or, S = 15 So, F = 3S = 3 × 15 = 45 years

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বিস্তারিত সমাধান

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অনুসন্ধান করুন

বিস্তারিত সমাধান

A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence the father's present age is --

সম্পর্কিত বিষয় সমূহ

সম্পর্কিত অন্যান্য প্রশ্ন

The price of a certain television set is discounted by 10 percent, and the reduced price is then discounted by 10 percent. The series of successive discount is equivalent to a single discount of -

If u> t, r> q , s>t, t>r, which of the following must be true?

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Ms. Lyla wants to put up fencing around three sides of her rectangular garden and have a side of 20 meter unfenced. If the yard has an area of 680 square meters, how many yards of fencing does she need?

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In a sugar-water solution, the ratio of water to sugar is 8:3. If you add 2 Kgs of sugar, the ratio become 2:1. What was the amount of sugar in the original solution?

If the area of rectangle R with length 4 feet is equal to the area of square S, which has a perimeter of 24 feet , then the perimeter of rectangle R equals -

What percent of 25 is 0.20?

If N and P are both odd numbers, which of the following numbers must be an even number?