A clothing design factory plans to produce 640 suits in 4 days, and the actual work efficiency has been increased by 10%. How many suits are actually produced every day?

A clothing design factory plans to produce 640 suits in 4 days, and the actual work efficiency has been increased by 10%. How many suits are actually produced every day?

640÷4x(1+10%)
=160x1.1
=176 sets
176 suits are actually produced every day

After 300 parts are processed, the work efficiency is increased to 1 / 2 / 1 times of the original due to the improved operation methods and tools. When 300 parts are processed, it can be completed 2 hours ahead of time. How many parts can be processed by the former and the latter two methods each hour
For example, what's on both sides

300/X=300/1.5X=2
We get x = 50
After improvement, it is 50 * 1.5 = 75 per hour

As a result, it takes half an hour less to process 2000 parts than 1800 parts
How many parts are processed per hour now and in the past?

If x parts are processed per hour, x = 1.25x (1 + 25%)
It used to take 1800 / X to process 1800, but now it takes 2000 / (1.25x) to process 2000
According to the equation: 2000 / (1.25x) = 1800 / x-0.5
The solution is x = 400
A: originally 400 parts per hour, now 500 parts per hour

Question 1: the sum of a and B is equal to 30, a is 3:2 more than B, how many points more than B?
Question 2: how much more is a than B? How much less is B than a?
30/(3+2)=6 3*6=18 2*6=12 18-12=6 6/12=1/2
A is 1 / 6 more than B and B is 1 / 7 less than a
According to the above answer, if you remove the condition that the sum of a and B is equal to 30 in the first question, you can still get that a is one-half more than B, then this condition is a little chicken ribs.

30/(3+2)=6 3*6=18 2*6=12 18-12=6 6/12=1/2
A is 1 / 6 more than B and B is 1 / 7 less than a