Question

In​ 2010, there were 12.4 million citizens of a certain country diagnosed with diabetes. This number of cases represents an increase of about 396​% over the number of cases in 1973. How many cases of diabetes were there in​ 1973?

Answer 1

To find the number of cases of diabetes in 1973, we can use the given information that the number of cases in 2010 represents an increase of about 396%. By solving the equation, we find that there were approximately 31.31 million cases of diabetes in 1973.

Step-by-step explanation:

To find the number of cases of diabetes in 1973, we can use the given information that the number of cases in 2010 represents an increase of about 396%. Let's assume the number of cases in 1973 is x.

396% of x is the increase from 1973 to 2010, which is 12.4 million.

Mathematically, we can write this as:

0.396x = 12.4

By solving this equation, we can find the value of x:

x = 12.4 / 0.396 ≈ 31.31 million

Therefore, there were approximately 31.31 million cases of diabetes in 1973.

Answer 2

3,131,313

Step-by-step explanation:

Let X represent the number of cases with diabetes in 1973.

An increase of 396% in diabetes cases in 1973 would be;

12.4 million = 396/100 × X

12.4 million = 396X/100

Cross multiply

12.4 million × 100 = 396X

X = [(12.4 million × 100) / 396]

X = 3,131,313

Therefore, the number of diabetes cases in 1973 is 3,131,313 cases