
RACIONALES
Authored by Bibi Serrano
Mathematics
4th - 12th Grade
Used 3+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
En una determinada población apareció una epidemia, si hace dos meses el 10% de la población tenía la enfermedad y un 90% gozaba de buena salud y en el transcurso de un mes, un 10% de las personas que estaban enfermas se curaron y el 10% de las que gozaban de buena salud se enfermaron. El porcentaje de la población que goza de buena salud hasta ese momento es:
81%
82%
91%
99%
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Gaste ka tercera parte y después gané lo equivalente a la mitad del resto, si ahora tengo $90.000, inicialmente tenía:
$180.000
$120.000
$150.000
$90.000
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tengo $180.000, gastó un tercio y un tercio del resto lo pierdo, me queda:
$60.000
$80.000
$40.000
$50.000
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En un colegio hay 42 estudiantes varones que representan 3/13 del total de estudiantes. El número total de mujeres es:
182
140
132
100
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
28/35 de la longitud de un camino miden 320 m, ¿Cuál es la logitud total del camino?
80 m
356 m
400 m
420 m
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Un hombre vende 3/5 de su terreno, alquila 1/4 y el resto lo cultiva. La porción de terreno que cultiva es:
39/40
3/20
17/20
1/40
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Si la tercera parte de mis ahorros se gastan en un viaje y la mitad de lo que me queda lo destino a un regalo para mi madre, entonces la fracción de los ahorros que queda es:
1/2
1/3
1/6
1/12
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