If west becomes south-east, what will north become?
A. South-west
B. North-east
C. South
D. North-west
Answer: Option A
Solution (By JKSSB Mock Tests)
West (270°) -> SE (135°) means 135° shift? Actually 270° to 135° is -135° or +225°. If -135° (ACW) shift, then north (0°) -135° = -135° = 225° (South-west). So South-west.
An insect can walk in both forward and reverse directions. He walks forward for 3 minutes and then reverse for 2 minutes. He walks at the speed of 5 meters per minute. In what minimum time will he be able to cover 105 metres?
Explanation:
In one 5-minute cycle, the insect walks 15m forward and 10m reverse, yielding a net progress of 5m per cycle. After 18 cycles (90 minutes), it has advanced 90m. In the next 3 minutes, it walks continuously forward at 5m/min, covering 15m. 90m + 15m = 105m. Total time = 90 + 3 = 93 minutes.
Amit traveled 15 km in a car, then took a left turn and traveled 5 km, then took a left turn and traveled 15 km. If he is now facing east, how far is he now from the starting point?
Explanation:
If two left turns (180° rotation) put him facing East, he must have started facing West. Path: 15km West, 5km South (left turn), 15km East (left turn). His final position is exactly 5km South of his starting point.
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