Answer:
15 apples
Step-by-step explanation:
The time it will take Jack and Chris to program the app when they work together is 4.24 hours.
<h3>What is a rate?</h3>
Rate is a ratio that compares two different quantities which have different units.
Jack program an app in 9 hours. Therefore, the rate is as follows;
1 / 9
Chris can program the same app in 8 hours. Therefore, the rate is as follows;
1 / 8
When they do it together.
1 / 9 + 1 / 8 = 8 + 9/ 72 = 17 / 72
1 / t = 17 / 72
cross multiply
72 = 17 t
t = 72 / 17
t = 4.23529411765
t = 4.24
Therefore, the time it takes for both of them is 4.24 hours.
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There were 24 questions on the test.
Because 18/24= 0.75
The smallest one is 45. Every multiple of 45 is another one.
Answer:
x=46.8
Step-by-step explanation:
4x-29x =234
Combine like terms
-5x = 234
Divide each side by -5
-5x/-5 =234/5
x = 46.8