Question

Ben left a 20% tip for his later if he left $4.20 how much did his bill come before the tip

Answer 1

Answer:

$21

Step-by-step explanation:

Let the amount of bill before tip was $x.

$\therefore \: 20 \% of \: x = 4.20 \\ \\ \therefore \: \frac{20}{100} \times x = 4.20 \\ \therefore \: x = 4.20 \times \frac{100}{20} \\ \\ \therefore \: x = 4.20 \times 5 \\ \\ \therefore \: x = \ 21.00$

Hence, the bill before tip was $21.

Answer 2

Answer: 21 dollars was his bill before the tip

Step-by-step explanation: 4.20 is 20% of what he paid with no tip included. This means you can set up an equation like this.

4.20 = .2x      This means that $4.20 is (is means =) 20% of (of means multiply) x (which is the unknown factor).