Question

pls solve it guys correct answer will be brainlist...​

Answer 1

BY USING MEAN FORMULA

X1 +X2.......X50/50 = 40----(1)

x1+ x2.....X50 = 2000

x1 + x2 .........X100/100 = 50

x51+ x52.....x150 = 5000---(2)

ADD 1 AND 2 EQ

X1 + X2 + .......X150 = 7000---(3)

FINDING MEAN FOR EQ 3

X1+x2.......X150/150 = 7000/150

mean of 150 students comined is 46.66

MARK ME AS BRAINLIEST IF I AM CORRECT