Question

В зоомагазине 40 канареек а попугаев в 3 раза больше . четвертая часть всех попугаев умеет говорить .сколько в магазине попугаев которые не умеют говорить?два куска одинаковой ткани стоят 480р. в одном из них 5м,а в другом 3м. сколько стоит каждый кусок ткани?

Answer 1

40*3=120ж попугаев
120:4*1=30п говорят
120-30=90п не говорят


?
480:(3+5)=60р один метр
60*5=300р первый кусок
3*60=180р второй кусок

Answer 2

1)5+3=8м-в двух кусках ткани2)480:8=60руб-стоит один метр ткани3)60*5=300руб-стоит один кусок ткани4)60*3=180руб-стоит другой кусок тканиОтвет:300рублей,180рублей

Answer 3

Number of Parrots that Cannot Speak in the Pet Store

In the pet store, there are 40 canaries and the number of parrots is three times greater than that. Additionally, one-fourth of all the parrots in the store can speak. We need to determine how many parrots in the store cannot speak.

To solve this problem, we can follow these steps:

1. Calculate the number of parrots in the store: Since the number of parrots is three times greater than the number of canaries, we can multiply the number of canaries by 3 to find the number of parrots. Therefore, there are 40 canaries * 3 = 120 parrots in the store.

2. Calculate the number of parrots that can speak: Since one-fourth of all the parrots can speak, we can multiply the total number of parrots by 1/4 to find the number of parrots that can speak. Therefore, there are 120 parrots * 1/4 = 30 parrots that can speak.

3. Calculate the number of parrots that cannot speak: To find the number of parrots that cannot speak, we subtract the number of parrots that can speak from the total number of parrots. Therefore, there are 120 parrots - 30 parrots = 90 parrots that cannot speak.

Therefore, in the pet store, there are 90 parrots that cannot speak.

Cost of Each Piece of Fabric

There are two pieces of fabric, and we know that the total cost of both pieces is 480 rubles. One of the pieces is 5 meters long, and the other is 3 meters long. We need to determine the cost of each piece of fabric.

To solve this problem, we can follow these steps:

1. Calculate the total length of the fabric: We add the lengths of both pieces of fabric to find the total length. Therefore, 5 meters + 3 meters = 8 meters.

2. Calculate the cost per meter of fabric: We divide the total cost of both pieces by the total length to find the cost per meter. Therefore, 480 rubles / 8 meters = 60 rubles per meter.

3. Calculate the cost of each piece of fabric: We multiply the cost per meter by the length of each piece to find the cost of each piece. Therefore, the cost of the 5-meter piece is 60 rubles/meter * 5 meters = 300 rubles, and the cost of the 3-meter piece is 60 rubles/meter * 3 meters = 180 rubles.

Therefore, each piece of fabric costs 300 rubles and 180 rubles, respectively.