I think the easiest way is to get a common denominator. So I will show you that way. (another way is to change it from fractions to decimals).
So at first we have:
2/5 5/8 57/100
(57/100 comes from 0.57, since it is in the hundredths place you put it over 100)
The Least Common Multiple between 5, 8, and 100 is 200
2/5 = 2x40 and 5x40 = 80/200
5/8 = 5x25 and 8x25 = 125/200
57/100 = 57x2 and 100x2 = 114/200
So the answer would be: Sunday, Wednesday, Monday
Answer: 180
Explanation: For the first number of the combination you have 60 possible options, because you need three numbers for the combo, times it by three.
Pretty sure the answer is 20
Hope this helps :)
You start with 100%, add 80% for the increase and you get 180%, take away 40% for the decrease and you get 140%
Just substitute the value of x from second equation into first equation:
N = x + y - n = 5
N = u + v + y - n = 5
N = 0 + y - n = 5
In short, N would be equal to y - n which is still equal to 5
Hope this helps!
