Question
Two person A and B from same distance with speed time
and same direction with speed of 48km/hr and 40km/hr .The speed of person B increased by ½ km every hr. after what time A and B will meet .Solution
Let the time be = t hrs , speed be= 48 km/hr , distance = 48× t Distance travelled by B forms an AP = 40, 40½, 41, 41½ , ………………………. t terms Where First term is 40 and Common difference is 1/2 Now, Sum of n terms = Sn = n/2 [2a + (n-1)d] = distance covered by A Sn = t/2 [2 × 40 + (t-1) 1/2] 48t= t/2 [2 × 40 + (t-1) 1/2] 96 = 80 + (t – 1) 1/2 16 = (t – 1) 1/2 33 = t Therefore A and B will meet after 33 hours
A 56.1-feet-long cricket bat, said to be the biggest in the world, was unveiled at Tank Bund, in ____________.
In which Indian state was the ‘Pirul Lao Paise Pao’ campaign launched to combat forest fires?
Prior to the 5G auction, which starts from July 26, the government will convert its debt into equity in Vodafone Idea. After the equity conversion, the ...
What was the theme for World Day Against Child Labour observed on June 12, 2025?
Which bank has been empanelled as a Clearing and Settlement Bank with the Indian Clearing Corporation Ltd (ICCL) & can now facilitate banking services t...
Dr. Usha Thakur was awarded the 12th Vishwa Hindi Samman for her contributions to Hindi literature. Where was this award presented?
Which hijacked ship's Bulgarian nationals were assured by Prime Minister Narendra Modi to return home soon after being rescued by the Indian Navy?
The International Cricket Council (ICC) has imposed a five-year period of ineligibility on which West Indies player for breaching multiple anti-corrupti...
In which tribe are 'Sayana' and 'Khumri' systems prevalent?
What was the total loan amount approved under Kalaignar Kaivinai Thittam?
