Answer:
1/4
Step-by-step explanation:
Find the GCD (or HCF) of numerator and denominator GCD of 18 and 72 is 18
Divide both the numerator and denominator by the GCD 18 ÷ 18 / 72 ÷ 18
Reduced fraction: 1 / 4 Therefore, 18/72 simplified to lowest terms is 1/4.
Carlos spent 15 minutes practicing his multiplication facts.
Explanation:
An hour is 60 minutes, Carlos practiced his multiplication facts for 1/4 of an hour.
First you must do 60 divided by 4 which is 15. 1/4 of an hour is 15 minutes.

Option A is the correct answer
$22* (150/100)= $33.
150% of $22 is $33~