Question

Solve for x. Round your answer to the nearest tenth if necessary.

7.5
11.3
FX C
E
6.8
B

Answer 1

Check the picture below.

`\cfrac{7.5+x}{7.5}=\cfrac{11.3+6.8}{11.3}\implies \cfrac{7.5+x}{7.5}=\cfrac{18.1}{11.3}\implies (11.3)(7.5+x)=(7.5)(18.1) \\\\\\ 84.75+11.3x=135.75\implies \implies 11.3x=51\implies x=\cfrac{51}{11.3}\implies x\approx 4.5`