In a fruit shop, the unit price of apples is 1.4 times that of pears. Xiaoming bought 5kg apples and 6kg pears and paid 39 yuan in total? Solving the first order equation with two variables

In a fruit shop, the unit price of apples is 1.4 times that of pears. Xiaoming bought 5kg apples and 6kg pears and paid 39 yuan in total? Solving the first order equation with two variables

Let the unit price of pear be x and that of apple be y
Type: 5Y + 6x = 39 type: y = 1.4x
By substituting y = 1.4x into the formula, we can get the following result:
X=3 Y=4.2
The unit price of apple is 4.2 yuan, and that of pear is 3 yuan

It costs 70 yuan to buy 10 kg apples and 20 kg pears. The price of 1 kg apples is equal to that of 1.5 kg pears

Suppose the unit price of pear is x yuan, then the unit price of apple is 1.5x yuan, X × 20 + 1.5x × 10 = 70, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 20x + 15x = 70, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 35x = 70, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp