Mike works very long hours every day. He usually gets up at 17:00. He has a shower and makes his breakfast. What a funny time to make breakfast! After breakfast he practices his guitar, then he puts on his jacket and goes to work. To get to work, he takes the number17 bus to the Star Hotel. The bus usually leaves at 19:15. He works all night. People love to listen to him! He gets home at 7:00, and he watches the early morning news on TV. He goes to bed at 8:30, a tired but happy man. Can you think what his job is?

（2016•重庆）我们知道，任意一个正整数n都可以进行这样的分解：n=p×q（p，q是正整数，且p≤q），在n的所有这种分解中，如果p，q两因数之差的绝对值最小，我们就称p×q是n的最佳分解．并规定：F（n）= $\frac{p}{q}$ ．例如12可以分解成1×12，2×6或3×4，因为12﹣1＞6﹣2＞4﹣3，所有3×4是12的最佳分解，所以F（12）= $\frac{3}{4}$ ．

在甲处工作的有272人，在乙处工作的有196人，如果要使乙处工作的人数是甲处工作人数的$\frac{1}{3}$，应从乙处调多少人到甲处，若设应从乙处调x人到甲处，则下列方程中正确的是（　　）