G + b = 420 ;
g / b = 7 / 3 ;
Then, g = ( 7 / 3 )b;
( 7 / 3 )b + b = 420 ;
7b + 3b = 1260 ;
10b = 1260 ;
b = 126 ( boys );
g = ( 7 / 3 )× 126 = 294 ( girls ) ;
Answer:
$1083
Step-by-step explanation:
Let the actual amount be x
So since 12% convenience fee is given
It means 12%of x
That's 12/100×x
And he paid $130
So let's solve
12/100 ×x=130
12x/100=130
12x=100×130
12x=13000
Let's make x the subject of formula by dividing both sides by 12
x=1083.333
Approximately 1083
Therefore the actual fee is $1083
A would equal 4 because you would first convert the mixed numbers into improper fractions, then move the constant to the right, and finally add the factions
a-2(1/2)=1(1/2)
a-(5/2)=(3/2)
a=(3/2)+(5/2)
a=4
Answer:
21/256 or 0.082 (approx.)
Step-by-step explanation:
4 - 515x + 2 = - 36
or, -515x = -36-2-4
or, 515x = 42 [multiplying with (-1) in both sides]
or, x = 42/515
or, x = 21/256 = 0.082
