1. Naughty and Xiaoxiao walked to the library together. Naughty walked 2 kilometers in two thirds of the time, and Xiaoxiao walked 5/7 kilometers in five quarters of the time. Who walks fast?

Tao Tao speed: 2 ÷ 2/3 = 2× 3/2 = 3/4 km/h;

Laughing speed: 5/7 ÷ 5/14 = 5/7×14/5 = 2km/,

2km/h > 3/4km/h； Laugh and walk fast;

The shop sent a basket of apples and pears. There are 25 kilograms of apples, and four fifths are equal to two thirds of pears. How many kilograms is this basket of pears? (column equation solution)

Solution: let pears have xkg；;

2/3 times =4/5×25

Solution, x=30

3. A train from A to B covered 9/ 13 of the whole journey, and covered 48% more distance than the rest.

Kilometers. How many kilometers are there between A and B?

Solution: Let the whole process have xkm；;

9/ 13x-(x-9/ 13x)=48

5/ 13x=48

x=48× 13/5

x= 124.8