Question

The number of measles cases increased 26.3% to 321 cases this year. What was the number of cases prior to the increase? Express your answer rounded correctly to the nearest whole number.

Answer 1

The right answer is "
`x\simeq 254`".

Explanation:

Let the number of earlier case will be "x".

Now,

⇒
`x+x* (26.3)/(100)=321`

or,

⇒
`x+x* 0.263=321`

By taking "x" common, we get

⇒
`x(1+0.263)=321`

⇒
`x=(321)/(1.263)`

⇒
`=254.15`

or,

⇒
`x\simeq 254`