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kirstenb278
28.06.2019 •
Mathematics
The strength of students in a school when increased by 8% becomes 2160. find the original strength of students in the school.
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Ответ:
1987.2
Step-by-step explanation:
We can write a proportion to find the total amount in the choir using the information given. A proportion is two equivalent ratios set equal to each other. Since we know the strength of students increased by 8% to 2160 then the original was 92%.
We will cross multiply the numerator of one ratio with denominator of the other. And then solve for y.
92(2160)=100(y)
198720=100y
y=1987.2
There are 1987.2 as the original strength of students.
Ответ:
4 is the GCF of
,
and ![68t^2](/tpl/images/0492/4217/2f213.png)
Step-by-step explanation:
Find the GCF of
,
and
.
GCF is the largest number that divide these numbers.
List the prime factor of
,
and
as:
Common factor of
,
and
is, ![2 \cdot 2= 4](/tpl/images/0492/4217/bfef0.png)
Greatest common factor of
,
and
is, 4