Answer:
7.07
Step-by-step explanation:
9514 1404 393
Answer:
- 42 students; (28 students); 70 students
- (60%); 40%; (100%)
Step-by-step explanation:
The percentages total 100%, so the missing percentage is
100% - 60% = 40%
The numbers on the number lines are proportional, so now you can write ...
?/100% = 28/40% . . . . . . ? total students
Multiplying by 100% gives ...
? = 28/0.4 = 70 . . . . . total students
Then the 60% portion of students can be found two ways:
60% × 70 = 42 students . . . . 60% of students
70 -28 = 42 students
Is always easier to subtract or add fractions with the same denominator, so
6 2/5 is the same as 6 8/20
I would suggest turning them both to improper fractions,
(You multiply 6 by the denominator 20 and get 120 then add 8)
6 8/20 = 128/20
and then do the same with 7 17/20 (Mutiply 7 and 20 and then add 17)
7 17/20 = 157/20
157/20 - 128/20 = 29/20 or 1 9/20
It decreased by 25% every year.
if you multiply a number by a decimal you will get a smaller number than you originally had. for example, if you multiply 95 by .75 you will get 71.25 it is decreasing but only 25%
