David and Eric went out to dinner. Their total bill was $45. They added 20% gratuity to the bill. If they split the bill in half, how much did each person spend?

1) Write an equation/expression for the word problem.

2) How much did each person spend?

1) (45x 1.2) / 2

2) $27 each

Step-by-step explanation:

Hi, to answer this question we have to multiply the initial bill amount by the gratuity percentage in decimal form (divided by 100)

45 x (20/100) = 45 x 0.2 = $9

Now, we have to add the tip amount (9) to the initial bill amount

45+9 = $54 (total bill amount with tip)

(We could obtain the same result if we multiply the initial bill amount by 1.2)

Finally, we have to divide the final bill amount by 2:

54/2 = $27 each

1) (45x 1.2) / 2

2) $27 each

Feel free to ask for more if needed or if you did not understand something.