Step-by-step explanation:
Let the sum of rupee be x
no of boys be y
then each boy get x/y
now if the no of boys increased by 10 each boy get x/(y+10) = (x/y)-1 => x/(y+10) = (x-y)/y .........(1)
now case 2nd if no of boys decrease by 15 each boy get x/(y-15)= (x/y) +3 => x/(y-15) = (x+3y)/y ...........(2)
Answer:
Range!
Step-by-step explanation:
It's the range because it's subtracting largest and smallest number in the set.
Answer:
a) cluster sampling
Step-by-step explanation:
In cluster sampling method, each member of a population is assigned to one and only one group.This means clusters are formed through probability method usually a simple random sampling.The participants in the clusters are the only one to be surveyed.
In this example, simple random sampling is used to identify 12 home rooms(cluster) where a group of 20 students (participants) in each room is given the survey.
45 + 65 = 5m + 65
45 = 5m
m = 9
Answer:
Three key messages often used are: 1. "Everyone is doing it"; 2. "It's fun to use our products"; 3. "You will be successful if you use our products."
Step-by-step explanation:
hope it helps
