Question

The average marks of 4 men is increased
by 3 when one of them whose marks are
120 is replaced by another man. What is
the marks of new men?
(1) 123
(2) 124
(3) 132
(4) 133
in that of the​

Answer 1

Answer:

1. let the average marks of the 4 men be x. therefore total marks = 4x. now when you replace the man who got 120 marks and replace him by another man who got ,say, y marks. then the average marks becomes x+3. now the total marks is 4x+12. hence  

4x-120+y = 4x+12 => -120+y = 12 => y=132. therefore the other man got 132 marks.  

2. let his average runs after 16 matches be x. hence total runs in 16 matches = 16x. now by scoring 85 runs in the 17th match he increases his average by 3 runs. therefore

16x+85 = 17(x+3) => 16x+85 = 17x+51 => x = 85-51 = 34.

therefore his average runs in 17 matches = x+3 = 37.

Step-by-step explanation:

PLZ MARK AS BRAINLIEST!!

Answer 2

answer :- the Mark's of new men is 132