Answers in the picture provided
So,
The secret to solving problems with ratios is to find the value of one unit.
5:7 = 12 units total
To find one unit, divide the total number of students by the total number of units.
600/12 = a
Simplify
50/1 = a
50 = a
The value of each unit is 50.
Now, multiply the units by the numbers in the ratio.
50(5) = b
250 = boys
50(7) = x
350 = x
There are 350 girls.
Answer:
60
Step-by-step explanation:
45 x 60/45 = 2700/45
2700/45 = 60
Answer:
- interest: $144
- principal plus interest: $944
Step-by-step explanation:
The amount of interest is found using the simple interest formula. That is added to the principal to find the total account balance.
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<h3>Interest</h3>
I = Prt . . . . . P = principal, r = annual rate, t = number of years
I = $800·0.06·3 = $144
The simple interest earned in 3 years is $144.
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<h3>Principal plus interest</h3>
Adding that to the principal gives ...
$800 +144 = $944
The total principal plus interest is $944.
