InfyTQ Averages Quiz 2

Solution:
As, the given consecutive numbers forms A.P. series,
In AP series, Middle term is same as the average of first and last term,

Hence, Z= 46
Therefore,L=42, M=44, Z=46, P=48 and T =50.

Average Weight of = (16x51+8x54)/(16+8) = 52
All boys

A. P= 14 ,28, ......

a =14

d=14

2nd multiple is 28

Third multiple =28+14=42

Fourth multiple =42+14=56

Fifth multiple =56+14=70

So first 5 multiples are 14,28,42,56,70

therefore average= (14+28+42+56+70)/5

= 42.4

Solution:
Sum of weight of all students of Section A = 36x42 = 1512
Sum of weight of all students of Section B = 44x48 = 2112

Average weight of the whole class (1512+2112)/(36+44)= 3624/80= 45.3

Solution:
Average speed =2x45x55/(45+55)= 4950/100 = 49.5

Solution:
Average speed =2x38x42/(38+42)= 3192/80 = 39.9

Solution:
Average speed =2x65x55/(65+55)= 7150/120 = 59.58

Solution:
Average = (20x30-45-35)/18 = 28.89

Solution:
Average = (15x40-45-35)/13 = 40

Solution:
Total sum of 15 numbers, = (15x40)+45+35 = 680

Average= 680/17= 40