Answer:
Mrs. Lee’s earnings were approximately 64.29% of the Lee family’s total income
Explanation:
For computing the approximate percentage we have to assume the things, and the calculation is shown below:
Let us assume the total earning be $100
So, lee earning would be = 100 × 60% = $60
And, the rest of the family earning is 40%
Now, Â
If the lee earned 20% more which equals to
=  $60 + ($60 × 20%)
= $60 + 12
= $72
And, the rest of the family income would remain the same, so it would be $40
So, now the total income would be equal to
= Lee earnings + rest of the family income
= $72 + $40
= $112
So, the approximate percentage would be
= ($72 ÷ $112) × 100
= 64.29%