mathbiomajor
mathbiomajor
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Use the distance equation d = rt. When the police nab the crooks, they will have traveled equal distances, so we can equate d = rt, where r and t are the speed and travel time of the police, with d' = r't', where r' and t' are the speed and travel t…
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Let's call the cost of the four items Jack bought a, b, c and d. Then a + b + c + d = $80. From the information given, a = b + c/2, b = d - c, c = a/3, and d = c + b. From that we can infer this: c = a/3 -----> 3c = a a = b + c/2 3c…
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Let's call the cost of the four items Jack bought a, b, c and d. Then a + b + c + d = $80. From the information given, a = b + c/2, b = d - c, c = a/3, and d = c + b. From that we can infer this: c = a/3 -----> 3c = a a = b + c/2 3c…
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Use the distance equation d = rt. When the police nab the crooks, they will have traveled equal distances, so we can equate d = rt, where r and t are the speed and travel time of the police, with d' = r't', where r' and t' are the speed and travel t…