
If two similar waves are traveling in the same medium, then they have same wave velocity. so we can infer that

Now, as per the formula ~ we know that :

Now, we can write it as :

And it's also given that frequency of wave A is 3 times that of frequency of wave B.
So, let's add the relation to our equation ~



So, choice C is correct ~
To
The Editor,
The Indian Express,
Chandigarh.
Sir,
I want to draw your attention to the ever increasing road accident in the city. Your paper has itself reported six accidents during the last 60 days.
These accidents are taking place due to several reasons. Some of these are poor road lighting, increasing encroachments, open violation of the traffic rules by drivers, absence of safety procedures and lack of traffic educations. The Deputy Commissioner of the city must chalk out a comprehensive plan to improve the traffic situation in the city. School children should be given proper traffic education. All vehicle drivers should be made to pass a screening test to judge their suitability as drivers. Roads should not only be repaired and widened but should also be provided with Sodium lamps to provide sufficient lighting. Helmet wearing law should be strictly enforced. Those violating traffic rules should not be allowed to go scot free. The traffic police should be pulled up to perform their duty honestly and efficiently. These and many more steps need to be urgently taken to check this menace of increasing road accidents.
With thanks,
Yours faithfully.
XYZ.
U need to work to be successful that's the 1 step to do to be successful
Answer:
B). Chocolate is now a sweet treat that is very popular in the United States.
Explanation:
The second statement most aptly relates the two given facts. It <u>states that chocolate has now become a sweet treat(implies that 'it wasn't sweet treat earlier despite being there since ancient times') and has become quite popular as reflected by huge consumption of '3 billion pounds' every year</u>. Thus, the second option amalgamates the two facts and displays that how the latter has led to former and how the former led to bring change in the latter by making it a popular sweet treat in the United States. Therefore, <u>option B</u> is the correct answer.