Quantitative - Average

Quantitative - Average
Question:-
Option (A)
42 kmph
Option (B)
35.8 kmph
Option (C)
55.2 kmph
Option (D)
46 kmph
Correct Option:
D
Question Solution:
Find the total distance covered in each segment of 10 minutes. You will get total distance = 46 kilometers in 50 mins.
Question:-
Option (A)
6 kg
Option (B)
9 kg
Option (C)
12 kg
Option (D)
15 kg
Correct Option:
B
Question Solution:
The weight of the second man is 135 and that of the third is 105. Hence, net result is a drop of 45 for 5 people. Hence, 9 kg is the drop.
Question:-
Option (A)
60
Option (B)
62
Option (C)
64
Option (D)
66
Correct Option:
B
Question Solution:
Total marks in first 4 tests = 72*4 = 288
Say he got ‘x’ marks on 5th tests, and his average is 70, that means
(288+x)/5 = 70
Or 288 + x = 350
Hence x = 350 – 288 = 62
Question:-
Option (A)
1628.4
Option (B)
1531
Option (C)
1492
Option (D)
none of these
Correct Option:
D
Question Solution:
Assume x is the average expenditure of 19 people. Then, 19x = 13 * 79 + 6(x + 4).
this gives x=80.85
hence 19x= 1536.1
Question:-
Option (A)
46
Option (B)
48
Option (C)
49
Option (D)
None of these
Correct Option:
D
Question Solution:
(2+ 12+ 22+ 32+ 42+ 52+ 62+ 72+ 82+ 92)/10
Since these numbers are equally spaced, the average is the middle number. However, since there is an
even number of addends, the average will be halfway between the middle two. Halfway between 42 and 52 is 47.