we know that
1) Lily swims a 
-meter race
2) She swims the first half in 
seconds
3) She swims the second half in 
seconds
so
To find the total time to swim the whole race sum the time in the first half plus the time in second half
therefore
<u>the answer is</u>
90% = 72 questions
\\Find 1%
1 % = 72 ÷ 90 = 0.8
\\Find 100%
100% = 0.8 x 100 = 80 questions
Answer: There were 80 questions
Answer:
your answer is D. 16/24
Step-by-step explanation:
mark brainliest if you could please! good luck!
Answer:
30 years old
Step-by-step explanation:
Joe's age can be set to x. Since Billy is twice as old as Joe, his age can be set to 2x. They add up to 45. You can set up an equation, 2x+x=45.
Simplify the equation.
3x=45, x=15
Joe is 15. Billy is 2(15)=30.
