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meriva
3 years ago
8

The number of students at a school decreased 20% from 2010 to 2011. If the number of

Mathematics
1 answer:
sladkih [1.3K]3 years ago
8 0

Answer:

C

Step-by-step explanation:

Okay, here we have a reduction in the number of students by 20% from 2010 to 2011.

In 2011, we had k students, so we want to calculate the number of students we had in 2010.

Let the number of students present in 2010 be x

So mathematically;

x - 20% of x = k

x - 0.2(x) = k

0.8x = k

x = k/0.8

x = k * 1/0.8

x = k * 1.25

x = 1.25k

lolultyl
2 years ago
why did you divide it by 1?
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