Answer:11
Step-by-step explanation:
Boys : girls=7:1
Sum of ratio=7+1=8
Let them number of girls be y
Then they number of boys=y+66
Total number of pupils=y+y+66
Total number of pupils=2y+66
Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils)
y=1/8 x (2y+66)
Cross multiply
y x 8=2y + 66
8y=2y + 66
Collect like terms
8y-2y=66
6y=66
Divide both sides by 6
6y/6=66/6
y=11
The number of girls is 11
5w^2 = A
You would multiply the width (w) by 5 because it's 5 times more than twice it's width. Then w (Width) would be to the power of 2 because it's 5 times more than twice its width. And this will all equal the Area (a)
If $600=6 tons
$600=6*2000
$600=12,000
12000/$600=$20
It’s $20 per pound
First you total the cheeseburgers and milkshakes which is 9.37
then you have to multiply 7.5% by 9.37 to find the tax in money which = .70
add them 9.37+.70
=10.07
Answer:
Step-by-step explanation:
300
4
