Current location - Training Enrollment Network - Mathematics courses - Primary school mathematics price formula
Primary school mathematics price formula
The amount needed for the first house is: 1 10x20=2200 yuan.

The amount needed for the second family is: the amount for buying two bottles is: 25x2-25x2/ 10=45 yuan.

The amount of 1 10 bottle is: 1 10÷2x45=2475.

The amount of the third company is: the amount before return 1 10x25=2750 yuan, and the return amount is 27x20=540 yuan.

The amount to be paid is: 2750-540=22 10 yuan.

2200 yuan due

So it is more appropriate to choose the first one.

I hope I can help you.