Question

The average five consecutive multiples of 4 is 28. What is the largest number?
a) 32
b) 36
d) 24
C) 28
​

Answer 1

let the first observation be X

then second one =X+4

third one =X+4+4=X+8

fourth one =X+8+4=X+12

fifth one =X+12+4=X+16

as per the problem ,

(X+X+4+X+8+X+12+X+16)÷5=28

(5x+40)÷5=28

5x+40=28*5

5x+40=140

5x=140-40

5x=100

X=100/5

X=20

therefore the observations are 20,24,28,32,36.

the largest observation =36.

therefore the answer is 36.

hope helps ❤♥