Question

Barry’s mountain bike weighs 6 pounds more than Andy’s.

If their bikes weigh 42 pounds altogether, how much does Barry’s bike weigh?

If we let A represent the weight in pounds of Andys bike then A+6 will represent the weight in pounds of Barry's bike

a+(a+6)=42

Solve for A.

(A.) 18

(B.) 24

(C.) 6

(D.) 40​

Answer 1

24 pounds.

Explanation:

a + (a + 6) = 42

a + a + 6 = 42

2a + 6 = 42

2a + 6 - 6 = 42 - 6

2a = 36

a = 36/2

a = 18.

So Barry's bike weighs 18 + 6 = 24 pounds.

Answer 2

A

Explanation:

a+a+6=42

2a+6=42

subtract 6 on both sides

2a=36

divide 2 on both sides in order to be left with the value of a

a=18