Large boxes hold 3 times as much as small boxes. layla has packed 4 large and 7 small boxes. if she has packed a total of 22.8 cubic feet, how much does a large box hold?

3.6

Step-by-step explanation:

1. 1 large=3 small

2. 4*3=12 small

3. 12+7=19 small in total

4. 22.8 cubic feet/19 small box=1.2 cubic feet per small box

5. 1.2*3=3.6 cubic feet for a large box

Double check:

3.6 as large box

1.2 as small box

(3.6*4)+(1.2*7)

=14.4+8.4

=22.8

In the end, a large box can hold 3.6 cubic feet.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.