Question
The speed of a bike increases by 6 km/hr after every 1
hour. If the distance travelled by the bike in 1st hour is 30 km, the find the total distance travelled by the bike in 16 hours.Solution
Since, the speed of the bike increases by 6 km/hr after every 1 hour, therefore the bike will travel 6 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 + 6 = 36 km Distance travelled by the bike in 3rd hour = 36 + 6 = 42 km This form an AP i.e. 30, 36, 42………distance travelled in 16th hour Therefore, total distance travelled by the bike in 16 hours = sum of the AP Distance travelled in 16 hours = (n/2){2a + (n – 1)d} Where n = number of terms = 16, a = 1st term = 30 and d = common difference = 6 Therefore, distance travelled in 16 hours = (16/2){2 × 30 + (16 – 1) × 6} = (16/2)(60 + 90) = 1200 km
Six lions N, O, P, Q, R and S are sitting in a straight row, facing north. Only Q sits to the left of R. N sits second to the left of O. S sits second t...
Which letter-cluster from the options will replace the question mark (?) to complete the given series?
ASDF, BUGJ, CWJN, ?
What approximate value will come in place of the question mark (?) in the following equation?
49.85 – 5.31 + 9.97 =?
In a certain code language, ‘MOTH’ is coded as ‘2514’ and ‘TOME’ is coded as ‘1453’.
What is the code for ‘E’ in that languag...
find the wrong term in the following series.
DWIK, HUML, LSQM, PQUN, TOXO
Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and th...
Select the letter triad from the given options which follows the same relation as shown below.
(HK, EH, BE)
Read the given statements and conclusions carefully. Assuming that the information in the statements is true, even if they appear to be at variance with...
Which two numbers and two signs should be interchanged in the following equation to make it correct?
4 + 2 ÷ 7 + 8 × 9 = 25
Select the option that is related to the third term in the same way as the second term is related to the first term:
DART : XGLZ : : SPIN :?
Relevant for Exams:
