The total scores of the x students from class A can be calculated by multiplying x and the average which is equal to 85. That is 85x.
In similar manner, we are able to find for the total scores of the students from Class B. That would be, 90y.
Combining the scores, the new average then becomes 88. This is equal to,
(85x + 90y) / (x + y ) = 88
Cross-multiplying,
85x + 90y = 88x + 88y
Combine all the x's and y's in each side of the equation.
85x - 88x = 88y - 90y
Combining terms,
-3x = -2y
The ratio is obtained through the step below,
-3x/-3y = -2y/-3y
x/y = 2/3
Thus, the ratio is 2/3.
Answer: L = R (The second one)
Step-by-step explanation:
f=0.03b represents the relationship between fee charged and amount of transfer.
Step-by-step explanation:
Given,
Amount of balance transfer = b
Fee charged on balance transfer = f = 3%
Amount of fee charged on balance transfer = 3% of amount of balance transfer
Amount of fee charged = 
Amount of fee charged = 0.03b
Therefore,
f=0.03b
f=0.03b represents the relationship between fee charged and amount of transfer.
Keywords: percent, division
Learn more about division at:
#LearnwithBrainly
If the exponent is negative move the decimal to the left if it's positive move to the right
Answer:
She used 6.825 pints of withe paint to paint her bedroom walls
Step-by-step explanation:
We know Cathy used 9.1 pints of paint and 1/4 is blue.
first we have to calculate the white paint, we are going to calculate it by subtracting 1/4 of the total paint
1 - 1/4 = 4/4 - 1/4 = 3/4
Now that we know that 3/4 of the total paint is white, we have to multiply it by the amount of paint so we get how many pints of paint are white
3/4 * 9.1 = 6.825
She used 6.825 pints of withe paint to paint her bedroom walls
