Question

one hundred forty countries participated in the 1984 summer olympics in los angeles. this was 75% more than the number of countries that took part in the summer olympics on Moscow 4 years earlier. how many countries participated in the 1980 olympics in Moscow?

Answer 1

80 countries participated in the 1980 olympics in Moscow.

Explanation:

Hello, I think I can help you with this

You can solve this by using a simple rule of three

Step 1

define

140 countries participated in 1984,this was 75% more than the last time,this means that 140 is the 175% of a value that we need to know

if

140 ⇔175%

x? ⇔100%

the relation is

`(140)/(175)=(x)/(100)`

Step 2

solve for x

`(140)/(175)=(x)/(100)\\x=(100*140)/(175)\\x=(14000)/(175) \\x=80`

80 countries participated in the 1980 olympics in Moscow.

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