On a flight from San Diego to Baltimore, 18 of the 156 seats are empty. What is the ratio of filled seats to empty seats on the flight?

138/18

23:3

Step-by-step explanation:

There are 18 empty seats so we can already fill out the right side of our ratio (yes I said our. Oh the communism!)  with 18, to make :18.

We also know that there are 156 seats, so we will subtract 18 to find the amount of the filled seats, which is 156-18 = 138

138 seats are filled.

We can put the 138 on the left side of the ratio which is now

138:18

We now divide both sides by 2 to try to get the simplified form.

138/2 = 69

18/2 = 9

69:9

Now we divide both sides by 3.

69/3 = 23

9/3 = 3

23:3

23 and 3 are both prime numbers meaning that there are no factors to divide or simplify with anymore except for the same number and 1.

The answer is 23:3

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

step-by-step explanation: yes