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Mathematics, 10.03.2021 20:00 Knownothing
IT-. Para pintar una pared se necesitaron % de pintura, si se quiere pintar 1/5 de una pared del mismo tamaño. ¿Cuánta pintura se necesitara?
a) 19/20
b) 11/20
c) 3/20
d) 15/4
III- ¿Cuál es el resultado de la operación 9 -[(91-85 ) x 3 )?
a) 27
b) 18
c) 4.5
d) 0.5
IV. Si con 3L de pintura se cubren 36 metros cuadrados de pared. ¿Cuántos litros son necesarios para pintar las dos caras de 60 metros cuadrados?
a) 80
b) 72
c) 66
d) 59
V. Una caja de colores tiene un precio regular de $120.Cuál es el precio cuando se aplica un descuento de 40%?
a) S80
b) $72
c) $66
d) $58
VI-. Es la solución de la ecuación 3(x+2) = 2(x+5)
a) X = 1
b) X-2
c) X =3
d) x 4
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Answers: 2
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