Darcy earns a salary of $1,400 per month, plus a commission of 4% of her sales. She wants to earn a total of at least$1,600 this month. What is the least amount of sales she needs?

Answer 1

0.04s + 1400 = 1600

0.04s = 200

s = $5000

Answer 2

Let x = amount of sales

Salary + Commission = Total

1400 + 0.04(x) = 1600

Now just need to solve. Subtract 1400 from both sides and simplify

1400 + 0.04(x) - 1400 = 1600 - 1400

0.04x = 200

Divide both sides by 0.04 and simplify

0.04x/0.04 = 200/0.04

x = 5000

Darcy will need $5000 in sales to earn $1600 this month.