Answer:
Step-by-step explanation:
It's 5/7
You get that by having a calculator that does that. If you don't then the way to do it is multiply the numerator and denominator by 1.25
4 * 1.25 = 5
5.6 * 1.25 = 7
You would set it up like this: 150x + 280 = 255x The you just solve.
645/560=1.151785714
Ther perccent error in her estimate is 15%
Answer:
x = 4
Step-by-step explanation: