单选题At a college basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended is 3：4. The ratio of the number of juniors who attended to the number of seniors who attended is 5：6. What is the ratio of the number of freshmen to the number of seniors who attended the basketball game?A5：8B3：4C3：5D2：3E1：3
单选题
At a college basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended is 3：4. The ratio of the number of juniors who attended to the number of seniors who attended is 5：6. What is the ratio of the number of freshmen to the number of seniors who attended the basketball game?
A
5：8
B
3：4
C
3：5
D
2：3
E
1：3
参考解析
解析：
Freshmen to Juniors is 3：4. and Juniors to Seniors is 5：6. Since the least common multiple of 4 and 5 is 20. multiply the terms of the first ratio by 5 and the second one by 4. Then the ratio of freshmen to juniors to seniors is l5:20:24. Therefore, 15:24 is the ratio of freshmen to seniors. 15:24=15/24=5/8
Freshmen to Juniors is 3：4. and Juniors to Seniors is 5：6. Since the least common multiple of 4 and 5 is 20. multiply the terms of the first ratio by 5 and the second one by 4. Then the ratio of freshmen to juniors to seniors is l5:20:24. Therefore, 15:24 is the ratio of freshmen to seniors. 15:24=15/24=5/8
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