Last year, for every 100 million vehicles that travelled on a certain highway, 90 vehicles were involved in accidents. If 3 billion vehicles travelled on the highway last year, how many of those vehicles were involved in accidents? (1 billion = 1,000,000,000)  Choose the most appropriate option:
A) 288
B) 320
C) 2,700
D) 3,200
E) 28,800
To solve we will set up a proportion. We know that “100 million vehicles is to 90 accidents as 3 billion vehicles is to x accidents”. To express everything in terms of “millions”, we can use 3,000 million rather than 3 billion. 2,700reating a proportion we have:   100/90 = 3,000/x   2,700ross multiplying gives us:   100x = 3,000 * 90   x = 30 * 90 = 2,700   2,700orrect answer is 2,700.
<result>C</result>
Last year, for every 100 million vehicles that travelled on a certain highway, 90 vehicles were involved in accidents. If 3 billion vehicles travelled on the highway last year, how many of those vehicles were involved in accidents? (1 billion = 1,000,000,000)