Answer:
I think it should be 56
Alright, lets get started.
The ages of all four sisters will be = x, x+2, x+4, x+6
As per given in question, two times of youngest sister age exceeds the oldest sister age by 30 means

Simplifying the equation



So this is the age of youngest sister.
So, age of oldest sister will be 
Hene the age of oldest sister is 42 years. : Answer
Hope it will help :)
You need to find out how many $ you gonna earn in 1 hours
175 divide 15=11.66
11.66x 18= 209.88
Am I supposed to be figuring out what the length of the two other legs are?