Answer:
30 girls
Step-by-step explanation:
10 x 2= 20
15x2=30
For every 10 boys there are 15 girls. since 20 is just 10 multiplied by 2 you can multiply 15 by 2
$1.64 per gallon
she paid $23.78
23.78÷1.64
She paid for <span>14.5 gallons
To check:
1.64 * 14.5 </span>
<span>23.78
Hope this helps </span>
Answer:
1050!!
Step-by-step explanation:
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We have an equation: 250/?= 50/100
Cross multiply:
50*?= 250*100
⇒ ?= 250*100/50= 500
The number is 500~
We have another equation: ?/500= 80/100
Cross multiply:
100*?= 80*500
⇒?= 80*500/100= 400
80% of 500 is 400~
For this case we have to:
x: Variable that represents the number of times Henry visits the art museum.
If you pay 15 for parking and 25 for admission every time you go, we have:

Now, if you buy a membership at a net cost (it does not depend on the number of visits to the museum) of $ 110 and only pay $ 10 of parking, every time you attend the museum, we have:

Finally, the two equations that represent the situation are:

Answer:
Option A