Question
The speed of a bike increases by 4 km/hr after every 1
hour. If the distance travelled by the bike in 1 st hour is 30 km, the find the total distance travelled by the bike in 12 hours.Solution
Since, the speed of the bike increases by 4 km/hr after every 1 hour, therefore the bike will travel 4 km extra after every 1 hour. Therefore, distance travelled by the bike in 1st hour = 30 km Distance travelled by the bike in 2nd hour = 30 + 4 = 34 km Distance travelled by the bike in 3rd hour = 34 + 4 = 38 km This form an AP i.e. 30, 34, 38………distance travelled in 12th hour Therefore, total distance travelled by the bike in 12 hours = sum of the AP Distance travelled in 12 hours = (n/2){2a + (n – 1)d} Where n = number of terms = 12, a = 1st term = 30 and d = common difference = 4 Therefore, distance travelled in 12 hours = (12/2){2 × 30 + (12 – 1) × 4} = (12/2)(60 + 44) = 624 km
One Terabyte equals to
Which of the following statements is/are correct in regards to the Ahmadiyya Movement?
1.   The Ahmadiyya Movement was founded by Mirza Ghula...
Which of the following enzymes is responsible for unwinding the DNA double helix during replication?
Who among the following can be appointed as the Chairman of the Central Advisory Board constituted by the Central Government under the Minimum Wages Ac...
Who among the following was the President of the Indian National Congress at the time of independence of India?
The Kole wetlands are located in which state of India?
A laptop was sold for Rs. 75,000 at a profit of 25%. For what price should it have been sold to gain a 40% profit?
What policy did the Indian government adopt in the 1970s to resolve industrial disputes?
Recently a rare freshwater edible cyprinid fish was discovered by the researchers and was named Garra laishrami. Where was this fish discovered?
What is the maximum duration of maternity leave provided under the Maternity Benefit Act, 2017?
Relevant for Exams:
