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Lana71 [14]
3 years ago
5

Tema : Números reales 1. Juanita tenia en su casa 15/20 kg de arroz y un vecino le regalo 1/4 kg más para preparar arroz con lec

he . Del total de arroz que recolecto , utilizo 11/20 kg ¿Que cantidad de arroz no utilizo ? 2. Doña teresa para recolectar dinero y comprar comida vendió los 2/3 de una docena de zapatos el lunes , Los 3/12 de una docena el martes y los 4/6 el miércoles . Si tenia dos docenas de pares de zapatos ¿Cuantos pares le quedan ? 3. Rodolfo tiene en la nevera 4 kg de mango , 3/4 kg de naranja , 1/2 kg de manzana y 3 kg de uva . Deposito todas sus frutas en una caja para regalarlas a la gente que no ha podido salir de sus casas .¿Cual es el peso de las frutas que va a regalar ?
Mathematics
1 answer:
pantera1 [17]3 years ago
3 0

Answer:

1) x = \frac{9}{20}\,kg, 2) Seis pares de zapatos (Six pairs of shoes), 3) x = \frac{33}{4}\,kg

Step-by-step explanation:

1) La cantidad de arroz no utilizada por Juanita es (The quantity of rice that was not used by Juanita is):

x = \frac{15}{20}\,kg + \frac{1}{4}\,kg - \frac{11}{20}\,kg

x = \frac{4}{20}\,kg + \frac{1}{4}\,kg

x = \frac{1}{5}\,kg + \frac{1}{4}\,kg

x = \frac{9}{20}\,kg

2) La cantidad de docenas sin vender es (The quantity of dozens of shoes that are not sold is):

x = 2 - \frac{2}{3}-\frac{3}{12} -\frac{4}{6}

x = 2 -\frac{2}{3} - \frac{1}{4}-\frac{2}{3}

x = 2 -\frac{4}{3}-\frac{1}{4}

x = 2 -\frac{16+3}{12}

x = 2-\frac{18}{12}

x = 2 - \frac{3}{2}

x = \frac{1}{2}

Hay seis pares de zapatos (There are six pairs of shoes).

3) El peso total de las frutas son (The total weight of fruits are):

x = 4\,kg + \frac{3}{4}\,kg + \frac{1}{2}\,kg +3\,kg

x = 7\,kg +\frac{6+4}{8}\,kg}

x = 7\,kg + \frac{10}{8}\,kg

x = 7\,kg + \frac{5}{4}\,kg

x = \frac{28+5}{4}\,kg

x = \frac{33}{4}\,kg

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