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UNO [17]
4 years ago
12

Victoria took a test and got 80% of the questions right.she answered 20 questions correctly how many questions were on the test?

a)28 b)22 c)24 d)25
Mathematics
1 answer:
lions [1.4K]4 years ago
6 0

Answer:

d)25

Step-by-step explanation:

(80/100)*x=20

x=25

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4 0
4 years ago
Si 15 obreros construyen un muro en 45 minutos, ¿en cuánto tiempo lo construirán 3 obreros con similar habilidad?
Alexxx [7]

Answer:

3 obreros tardaran 225 minutos en completar el trabajo.

Step-by-step explanation:

Sea R la velocidad con la que un obrero puede construir 1 muro.

Sabemos que 15 obreros construyen un muro en 45 minutos, entonces:

(15*R)*45min = 1 muro

Con esta ecuación podemos encontrar el valor R

R = (1 muro)/(15*45min)  

Ahora queremos saber cuando tiempo tardan 3 obreros en construir un muro, entonces tenemos que resolver:

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3 obreros tardaran 225 minutos en completar el trabajo.

7 0
3 years ago
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