Question

In the annual sports competition, the junior high and high school students are participating in the tug of war contest in the ratio of 10 : 3. If 70 junior high students participate in the contest, then, what is the number of students from high school that are participating?

Answer 1

As we can see, there are 3 high school students for every 10 junior high students.

Let us assume that the number of high school students participating in the tug of war is ‘x’. So, the proportion equation will look like this,

10 : 3 = 70 : x

We can write the equation as,

\(\frac{10}{3} = \frac{70}{x}\)

10x = 70 x 3

10x = 210

x = 21

Hence, there are 21 high school students participating in the tug of war contest.