If a*b means 2a + b , then what is 2*5 ?

Answer

9

Explanation

a*b ⇒ 2a + b

2*5 ⇒ ?

Comparing a*b and 2*5, we can say that;

a = 2    and

b = 5

So, substituting a with 2 and b with 5 in the equation 2a + b we have,

a*b   ⇒ 2a + b  

2*5  ⇒ 2(2) + 5

        ⇒ (2×2) + 5

      ⇒ 4 + 5

      ⇒ 9

To solve this problem you must apply the proccedure shown  below:

If , you have that:

Because and

Therefore, as you can see, the answer is:

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