Four dollars can buy 4/6 lychees, 8/5 lychees, 4/5 apples, 4/3 watermelons and 4/2 bananas.
Divided by apple 6/5 2 1 3/5 2/5
Corresponding buyer Xiaoming Xiaojun Xiaohua
Draw a table for you first, and then read the following explanation.
A: Litchi per kilogram of 6 yuan, Litchi per kilogram of 2.5 yuan, Apple per kilogram of 5 yuan, Watermelon per kilogram of 3 yuan and Banana per kilogram of 2 yuan.
So, on the other hand, how many fruits can I buy for one dollar? The answers are litchi 1/6 kg per yuan, litchi 2/5 kg per yuan, apple 1/5 kg per yuan, watermelon 1/3 kg per yuan, banana 1/2 kg per yuan.
C: In the title: The fruit bought by Xiaoming weighs 4 kilograms, which is 5/2 that bought by Xiaohua and 3/5 that bought by Xiaojun.
Compared with the sentence in B. 4, Qian Yuan Xiaoming can only buy 4/5 kilograms of apples. You can also think of it this way: the denominator is all 5, which must be one of apples and lychees. So the relationship between apples and lychees must be an integer multiple. It is impossible for Obana Xiaojun to buy litchi, otherwise it will be twice as much as Xiaoming or 1/2 times.
E: The weight difference between 4 yuan and 1 yuan is four times, but the weight ratio of fruits bought by Xiaoming, Xiaojun and Xiaohua is the same. So look at this sentence of B.
Apples weighing15 are divided into 1/6 litchi, 2/5 litchi, 1/5 apple, 1/3 watermelon and 1/2 banana, respectively;
Get 6/5; 2; 1; 3/5; 2/5
So Obana Xiaojun
The fruit bought corresponds to Xiaojun Xiaohua.
F: Haha, Xiaoming bought apples, Xiaohua bought bananas and Xiaojun bought watermelons. You are not dizzy in the face of so many words.
I haven't eaten fruit for a long time. It's noon 1 p.m. I have a cold, a runny nose and a hungry stomach. If only I could teach you to eat bananas.