Lisa can travel 228 miles in the same time that Kim travels 168 miles. If Lisa's speed is 15 mph faster than Kim's, find their rates.
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Two frenchmen entered to a coach in a train in US.
One said another:" Emma comes first. Then I came.Then two ásses comes.Then once again I came. Then again two ásses came and then I came and pee two times. And finally I came once again"
The lady hearing this said"What rubbish are you talking about sex?"
The man replied"What madama? I is techinga spellinga of Mississippi"
One said another:" Emma comes first. Then I came.Then two ásses comes.Then once again I came. Then again two ásses came and then I came and pee two times. And finally I came once again"
The lady hearing this said"What rubbish are you talking about sex?"
The man replied"What madama? I is techinga spellinga of Mississippi"
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Lisa
(x + 15) t = 228
1) xt + 15t = 228
Kim
2) xt = 168
Equation 1 less equation 2
15t = 60
t = 4
Substitute t=4 in equation 2
4x = 168
Divide both sides by 4
x = 42
Kim's speed = x = 42mph
Lisa's speed = x + 15 = 42 + 15 = 57mph
(x + 15) t = 228
1) xt + 15t = 228
Kim
2) xt = 168
Equation 1 less equation 2
15t = 60
t = 4
Substitute t=4 in equation 2
4x = 168
Divide both sides by 4
x = 42
Kim's speed = x = 42mph
Lisa's speed = x + 15 = 42 + 15 = 57mph
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