Answer: 348 students do not own a cell phone.
Step-by-step explanation:
12 out of 15 = 80%
80% of 435 = 348
Answer:
Step-by-step explanation:
81/153 x/100
81•100=8,100
8,100/153
52.9
<u>Answer:</u>
$50 and $115
<u>Step-by-step explanation:</u>
We know that,
the sum of the two rates = $165 per hour
Let x and (165 - x) represent the $/hour of the 15hr and 5hr mechanics respectively.
Then combining their charges together to get:

Solving for x to get:



So the rate charged per hour by one mechanic is $50 and for the other mechanic =
$115.
Answer:
x+2/5x
Step-by-step explanation:
x%of 40 is 2/5x
...40 increased by x% of it self = x+2/5x