Last year, for every 100 million vehicles that travelled on a certain highway, 98 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)
Choices
A) 288
B) 320
C) 2,940
D) 3,200
E) 28,800
To solve we will set up a proportion. We know that “100 million vehicles is to 98 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. 2,940reating a proportion we have:   100/98 = 3,000/x   2,940ross multiplying gives us:   100x = 3,000 * 98   x = 30 * 98 = 2,940   2,940orrect answer is 2,940.
<result>C</result>
Last year, for every 100 million vehicles that travelled on a certain highway, 98 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)