This question is from powerPrep pracrice test
One hour after Yolanda started walking from X to Y, a distance of 45 miles, Bob started walking along the same road from Y to X. If Yolandas waling rate was 3mile per hour and Bob's was 4 miles per hour, how many miles had Bop walked when they met?
a. 24
b.23
c.22
d.21
e.19.5
Just wondering if there is a shorter way out.
This is how understood
since Yolanda started one hour ahead, she had covered 3 miles already
D= S * T 3m/h * 1 hr = 3
therefore remaining distance is 45-3=42
Sice they are moving in the opposite direction, add their speed
3+4 = 7m/h
therefore, time = 42/7 = 6hrs
hence bob would travel 4*6 = 24 miles
Please let me know if there is a shortcut
Safisana
One hour after Yolanda started walking from X to Y, a distance of 45 miles, Bob started walking along the same road from Y to X. If Yolandas waling rate was 3mile per hour and Bob's was 4 miles per hour, how many miles had Bop walked when they met?
a. 24
b.23
c.22
d.21
e.19.5
Just wondering if there is a shorter way out.
This is how understood
since Yolanda started one hour ahead, she had covered 3 miles already
D= S * T 3m/h * 1 hr = 3
therefore remaining distance is 45-3=42
Sice they are moving in the opposite direction, add their speed
3+4 = 7m/h
therefore, time = 42/7 = 6hrs
hence bob would travel 4*6 = 24 miles
Please let me know if there is a shortcut
Safisana
