- 2 hr
- 4 hr
- 1 hr 15 min
- 2 hr 30 min
- d
-
Speed of boatman=(Upstream + Downstream)/2
Speed=Distance / Time
Speed of upstream against water=2km per 2 hr=2/2=1Km/hr
Speed of downstream=1 km per 20 min=1*60/20=3km/hr
Total Speed of boatman=1+3/2=4/2=2 km/hr
Time taken for 5 km in stationary water=5/2=2.5h
1.5hr=2 hour 30 min
- Sleep
- Winter
- Dream
- Bear
- a
-
Marathon means a long race.
Hibernation is a long period of sleep.
- 32
- 07
- 34
- 29
- c
-
8,22,8,28,8,34,8,40,8,46
The Number 8 is constant after every One Number.
Remaining series will be continue by adding 6.
- Mother
- Aunt
- Sister-In-Law
- Mother-In-Law
- b
-
Sisters= A & B
Brothers= C & D
A is mother of D (C & D are brothers)
A is also mother of C.
B is sister of A
Then B is Aunt of C.
- LKOP
- LKPO
- KLOP
- KLPO
- b
-
D C X W
H G T S
L K P O
P O L K
T S H G
- July
- March
- December
- February
- d
-
March, July and December have 31 days except February.
July 31
March 31
December 31
February 28 Or 29
- 31
- 32
- 33
- 34
- c
-
Suppose Number is x
Double of X= 2x
Addition of 15= 2x+15
Result=81
2x+15=81
2x=81-15
x=66/2=33
- 70
- 71
- 80
- 92
- a
-
70,71,76,70,81,86,70,91,96,70,__
Number 70 is used in this series as every third number. You will carry on this series by adding 5 in previous number.