Answer: Kelly earns $660 in a week.
Step-by-step explanation:
Let x represent the amount that Scott earns in a week.
Kelly earns 20% more than Scott
The value of 20% of x is
20/100 × x = 0.2 × x = 0.2x
This means that the amount that Kelly earns in a week is expressed as
x + 0.2x = 1.2x
Together, Kelly and Scott earn $1210.00 per week. This means that
x + 1.2x = 1210
2.2x = 1210
x = 1210/2.2
x = $550
The amount that Kelly earns per week would be
1.2x = 1.2 × 550
= $660
