Since Ellen drove a total of 80 miles, and for 2 hours.
Her speed is = 80/2 = 40 miles/hour
So Ellen drove for 40 miles/hour.
Since Carin drove 5 miles per hour faster than Ellen, the he drove = (40 + 5) = 45 miles/hour.
So Ellen drove 40 miles/hour and Carin drove 45 miles/hour
Usando algebra, veremos que cada estudiante debe aportar $5.00.
<h3>
¿Cuál será el aporte de cada estudiante?</h3>
En el caso en el que hay 25 estudiantes, cada uno aporta $4.00, entonces la cantidad total que se colecta es:
25*$4.00 = $100
Ahora, en el caso de que hay 20 estudiantes, cada uno aportara una cantidad x, de tal forma que:
20*x = $100
Debemos resolver la ecuación de arriba para x:
x = $100/20 = $5.00
Es decir cada estudiante debe aportar $5.00
Sí quiero aprender más sobre algebra, puedes leer:
brainly.com/question/24999712
The first thing that's easiest for me, at least, is to make the mixed number into an improper fraction. That would make this problem 5 x 15/4. Just make five into a fraction, 5/1 and then put it into the problem:
5/1 x 15/4 = 75/4
Now, put the answer you got back into a mixed number (if your teacher wants you to)
How many times does four go into 75? 18, with a remainder of 3. The answer as a mixed number would be 18 3/4 or 18.75
140 cm because 14 cm in a minute, with ten minutes. 10•14= 140
