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.
My guess is (C
that could be the total number
Answer:
3.You collect
4.Multiply the bottom by 4 and then add
5.Multiply the bottom by -2 and then add
6.Multiply the bottom by 2.Multiply the top by 3 and then add
7.Multiply the top by -3.Multiply the bottom by 2and then add
Step-by-step explanation:
Answer:
veinte
Step-by-step explanation:
Son veinte porque si alineas 10 + 10 así-
10
+ 10, solo agregas las que serán un dos. Luego sueltas el cero, que será 20.
Answer:
20% probability of a red
Step-by-step explanation:
How many marbles are there total?
12 + 10 + 6 + 10 + 22 = 28 + 32 = 60 marbles
P(red marble) = 12 red/ 60 total marbles = 12/60 = 1/5 = 20%
