In a class 15 students like Maths, 20 students like English and 10 students like science.5 students like all three subjects. If there are 50 students in the class, how many students like none of the three subjects?

non all of the students like there class

Step-by-step explanation: 20+10+15+05=50

n

step-by-step explanation:

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.