Question
A is cycling at an average speed of 20 km/hr such that
he can reach a certain point at 12 noon. If he cycles at 60 km/hr, then he will reach the destination at 10 a.m. At what speed he should cycle to reach the destination at 11 a.m.Solution
Let the distance to be travelled be ‘x’ km Time taken when speed is 20 km/hr = (x/20) hours Time taken when speed is 60 km/hr = (x/60) hours According to the question, (x/20) – (x/60) = 2 Or, 3x – x = 2 × 60 Or, 2x = 120 km Or, x = 60 km Time taken to travel 60 km with speed of 20 km/hr = 60/20 = 3 hours Therefore, he started at 12 – 3 = 9 a.m. Therefore, required speed to reach the destination at 11 a.m. or 2 hours = 60/2 = 30 km/hr
If in a code language, 'WICE' is written as 'DRXV', then how will 'ROPE' be written in the same code language?
Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.
PTXB
GKOS
HKNQ
MQUY
In a certain code language, ‘FINAL’ is written as ‘GHPNY’ and ‘VISIT’ is written as ‘GXUVG’. How will ‘GROUP’ be written in that lan...
Select the option that represents the letters that when placed from left to right in the blanks below will complete the given letter series.
N _ ...
If in a code language CRACKS is written as DQBBLR, then how would SPROUT be written in that same code language?
Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance w...
Select the term from among the given options that can replace the question mark (?) in the following series.
2A, 3C, 5F, 7J, 11O, ?
Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the w...
Choose the set of numbers that is similar to the following set.
16, 30, 36}
Three of the following four options are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group?
(NOTE:...
