Jimmy is now three years older than Bobby. If seven years from now the sum of their ages is $79$ , how old is Bobby now?

29

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31

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33

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35

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Solution

The correct option is A $31$
Let the age of bobby be $a$ and the age of jimmy be $b$
We have $b = a + 3$ and $a + 7 + b + 7 = 79$
Which implies $b - a = 3$ and $a + b = 65$ , we get $b = 34$ and $a = 31$
The age of bobby is $31$ .

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Jimmy is now three years older than Bobby. If seven years from now the sum of their ages is 79, how old is Bobby now?

The correct option is A 31Let the age of bobby be a and the age of jimmy be bWe have b=a+3 and a+7+b+7=79Which implies b−a=3 and a+b=65, we get b=34 and a=31The age of bobby is 31.

Jimmy is now three years older than Bobby. If seven years from now the sum of their ages is $79$ , how old is Bobby now?

The correct option is A $31$
Let the age of bobby be $a$ and the age of jimmy be $b$
We have $b = a + 3$ and $a + 7 + b + 7 = 79$
Which implies $b - a = 3$ and $a + b = 65$ , we get $b = 34$ and $a = 31$
The age of bobby is $31$ .