My mother gave the salesman 50 yuan and 14 yuan for change. It is known that every kilogram of apple is 3 yuan per kilogram and pear is 3 yuan per kilogram. How many kilogram of banana and apple can I buy? Mom bought the whole kilogram

My mother gave the salesman 50 yuan and 14 yuan for change. It is known that every kilogram of apple is 3 yuan per kilogram and pear is 3 yuan per kilogram. How many kilogram of banana and apple can I buy? Mom bought the whole kilogram

That is to buy apples from 0 kg to 12 kg, a total of 13 ways to buy
Apple 0 kg, pear 12 kg;
Apple 1kg, pear 11kg;
Apple 2kg, pear 10kg;
Apple 3 kg, pear 9 kg;
Apple 4 kg, pear 8 kg;
Apple 5kg, pear 7kg;
Apple 6 kg, pear 6 kg;
Apple 7 kg, pear 5 kg;
Apple 8 kg, pear 4 kg;
Apple 9 kg, pear 3 kg;
Apple 10 kg, pear 2 kg;
Apple 11 kg, pear 1 kg;
Apple 12 kg pear 0 kg

Xiangjiao is 3 yuan / kg, apple is 5 yuan / kg, Xiaogang has 50 yuan. How can he buy fruit to make banana

As long as 3x + 5Y = 50, 10 kg banana, 4 kg apple

My mother bought some bananas and apples, paid the clerk 50 yuan, and recovered 14 yuan. Please calculate how many kilos of bananas and apples my mother bought?
Banana is 3 yuan per kilogram, apple is 5 yuan per kilogram,

50-14 = 36 yuan
Let's say banana y kg, apple x kg
36=5y+3x
y＝36-3x÷5
y=36÷5
y=30…… six
y=30÷5
y=6
x＝6÷3
x＝2
Answer: Apple 6 kg, banana 2 kg