If 16+4x is10 more than 14, what is the value of 8x ?

A) 2

B) 6

C) 16

D) 80

Solution : 16

We can write the equation for the first part of this problem as:

16+4x=10+14

We can now solve for 4x:

−16+16+4x=−16+24

0+4x=8

4x=8

To find the value of 8x we can multiply each side of this equation by 2:

2×4x=2×8

8x=16