Answer:
45 girls
Step-by-step explanation:
- Remark
- There are only 2 choices for gender. So if the class is 60% girls, the there must be 100 - 60 = 40% for the boys.
- But we are told that the boys are 30 in number.
- Let x = the total number of students.
Solution
- 40/100 * x = 30 Change the % to a decimal
- 0.4 x = 30 Divide both sides by 0.4
- 0.4 x / 0.4 = 30 / 0.4 Do the division
- x = 30/0.4
- x = 75 students in total
Formula
Total of Boys and Girls = Number of boys + number of girls.
Givens
- Total = 75
- Number of boys = 30
Solution II
- 75 = x + 30 Subtract 30 from each side
- 75 - 30 = x +30 - 30
- 45 = x
- There are 45 girls in the class.
A and B are true
c. difference between -9 and 1 is 10
d.Nelia had the lowest with -9
Answer:$27
Step-by-step explanation:
x-27=0
0+27=27
27-27=0
The length of a car is 4.5 meters.
The customary units - 12 inches = 1 foot
4.5 meters is about 177.165.
So, the length of a car in customary units would be 14.76375 units.....
Answer:
$2500
Step-by-step explanation:
The amount of simple interest is computed using the formula ...
I = Prt
where P is the principal amount of the loan, r is the annual rate, and t is the number of years. Filling in the given information, we have ...
425 = P·0.085·2
P = 425/0.17 = 2500 . . . . divide by the coefficient of P
The original amount of the loan was $2500.
