Question

the mean mass of 7 boys is 43kg .the total mass of 3 boys is 141kg if the remaining 4 boys have the same mass . what is the mass of each of the four
A.39
B.113
C.40
D.47

Answer 1

Answer:

C. 40

Step-by-step explanation:

total mass of all 7 boys = 43×7=301

mass of 3 boys = 141

So mass of 4 boys = 301-141=160

so÷

mass of each boy=60/4=40 kg

Answer 2

Answer is C.40

explanation is in the image.....hope it helps...

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