Two men who are traveling in opposite directions at the rate of 45 and 55 mph respectively started at the same time at the same place. In how many hours will they be 280 apart?

Solución

Solución

time : 2 \frac{4}{5}

Pasos de solución

Translate the problem into an equation:

45 x + 55 x = 280

Resolver para

x, 45 x + 55 x = 280 : x = \frac{14}{5}

Convertir las fracciones impropias a números mixtos

time : 2 \frac{4}{5}

Ejemplos populares

What would you have to invest today at 5% interest compounded monthly if you wish to have 20,000 in 10 years?Four times the sum of a number and 7 equals 5 Find the final amount of money in an account if \$500 is deposited at 7.5 %interest compounded quarterly and the money is left for 8 years.The quotient of 8 and the cube of a number.The product of 3 and 4 less than a number is-4.