Question

· Due to the pulse polio campaign, the number of polio cases in Uttarakhand has come down by 85% to 135. Find the number of cases earlier.​

Answer 1

Answer:

Number of cases earlier was 900.

Step-by-step explanation:

Let's assume that, the number of cases earlier was x

The number reduced by 85% to become (100-85)%=15%

According to the problem:

$x.\frac{15}{100} = 135$

$=>x = 135.\frac{100}{15} =27.\frac{100}{3} =900$