SAT数学题一道
问题描述：
SAT数学题一道
A hiking trail is 19 miles long.There is a market at the start of the trail and a marker every 2.5 miles.There is a rest area at the start of the trail and a rest area every 6 miles.What is the radio of the number of markets to the number of rest areas on the entire trail?
1,为什么?
答
the number of markets 19 /2.5 约等于 6
the number of rest areas 19 /6 约等于3
所以 6/3 =2:119/2.5 Լ����7��������Լ����, Ҫ����ȡ����....