Question

The average mass of 4 boys is 52kg. When the 5th boy joins the average mass becomes 50kg. Find the weight of the 5th boy

Answer 1

Answer:

42kg

Step-by-step explanation:

Let the mass of 4 boys be x kg

Average mass=mass of 4 boys/ 4

Average mass=52kg (Given)

x/4=52

x= 52×4=208

Mass of 4 boys,x= 208 kg

Let the mass of 5th boy be y kg

According to the question,

Average mass of 5 boys=50 kg

Average mass of 5 boys=

mass of 4 boys+ mass of 5th boy/5

Equation will be

208+y/5=50

208+y=50×5

208+y=250

y=250-208

y=42

Hence, the mass of 5the boy,y= 42kg

*PLZZ MARK ME AS BRAINLIEST*

IF ANY DOUBT, CAN BE SHARED IN COMMENT SECTION.

It was a nice question