Question
Two individuals, A and B, are walking. Person A takes 1
hour longer than person B to cover a distance of 84 km. However, if person A doubles their speed, they take 2 hours and 30 minutes less than person B to cover the same distance. Find the original speed of person B (in km/h).Solution
Let speed of A and B be ‘x’ km/h and ‘y’ km/h respectively.
According to question;
84/x – 84/y = 1…………………..(1)
And, 84/y – 84/2x = 5/2…………………(2)
From equation (1) and (2) we get
84/x – 1 – 84/2x = 5/2
42/x = 5/2 + 1 = 7/2
x = 12
So, y = 14 km/h
Which structure protects the plumule during emergence in monocots?
The study of soil from the stand point of higher plants is known as ……………………….
Which one the following is considered when the calculated F is greater than table F value at 5% only, the differences in treatments is?
Soil microorganisms are most active at which temperature range?
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): Pungency and red colour ...
Which soils favour maximum ammonia volatilization losses of fertilizer - N?
Who is the current minister of Agriculture and Farmers’ Welfare Ministry?
Which of the following cotton species produces the longest staple?
First interspecific cross was made by which of the following Scientist?
Silk is the secretion of:
Relevant for Exams:
