Traditional Culture Encyclopedia - Weather forecast - Good at math, come and help me. How to do this problem is well received. Thank you, dear. 1. Summer is coming, and the weather is getting hotter and hotter, so one shop is one shop.
Good at math, come and help me. How to do this problem is well received. Thank you, dear. 1. Summer is coming, and the weather is getting hotter and hotter, so one shop is one shop.
Set the price before price adjustment to X and Y yuan/bottle,
According to the known enumerable equations, as follows:
( 1)x+y = 7；
(2)3 * 1. 1x+2 * 0.95y = 17.5，
Substitute y=7-x of (1) into 3 *1.1x+2 * 0.95 * (7-x) =17.5 of (2).
Simplified to 7x=2 1, so x = 3；;
Substitute (1) to get y=4.
A: Before the price adjustment, every bottle of carbonated drinks is 3 yuan, and every bottle of fruit juice drinks is 4 yuan.
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