Answer:
A1) 125
A2) 47.5%
B) 30
Step-by-step explanation:
Remember 'of' in this sentence means times(*). % shows a certain number/100.
a1) 48% 'of' what number is 60?
(let unknown number be x)
48/100 *x=60
Solve the equation, and the answer is x=125
a2) what percentage 'of' 120 is 57?
(let the unknown percentage be x)
(x/100)*120=57
x=47.5%
b) 24 students= 80% of the total number of students
1%=24/80
100% of the total number of students=30
So, there are total of 30 students
Answer:
x
=
±
√
21
Explanation:
To find
x
2
you have to find the square root of
21 x = ± √ 21 ≈ ± 4.5286
Step-by-step explanation:
Answer:
1369
Step-by-step explanation:
3.7 x 10 = 37 x 37 = 1369
The answer is 8,000 because 19 times 421 equals 7,888 and that estimated is 8,000
