1. The perimeter ratio is 1: 2, and the area ratio is 1: 4.

2. The area ratio is 1: 2 and the perimeter ratio is 2: 3.

The ratio is 3: 4 and the ratio is 4: 7.

4. Xiaoming reached 70% and Xiao Qiang reached 66.7%.

So Xiao Ming has a high hit rate.

5. If the volume of the cup is V, the sugar in the first cup is 0. 1v, and the water is 0.9v The sugar in the second cup is (111) v, and the water is (1/kloc).