Question

12) As of August, 2011, Russia has had 21 rocket launch failures out of 743 total launches. To the nearest whole number, how many failures can be expected from the next 800 launches?

23
800
743
44
16,800

Answer 1

23

Explanation:

It is given that, in Russia there are 21 rocket launch failures out of 743 total launches. We need to find no of failures for the next 800 launches.

21 rocket = 743 launches

1 launch =
`(21)/(743)\ \text{failures}`

For 800 launches,

`=(21)/(743)\ \text{failures}* 800\\\\=22.611\ \text{failures}`

or

= 23 failures

So, there are 23 failures in next 800 launches.