Question
The downstream speed of a boat is 48 km/hr, while its
upstream speed is 32 km/hr. The boat takes 10 hours to travel a distance of (p + 40) km downstream and (q + 60) km upstream. Additionally, it takes 13 hours to travel (p + 56) km upstream and (q + 140) km downstream. Determine the value of (p + q).Solution
ATQ, (p + 40)/48 + (q + 60)/32 = 10 (2p + 80 + 3q + 180)/96 = 10 2p + 3q = 960 – 260 = 700 … (i) Also, (p + 56)/32 + (q + 140)/48 = 13 (3p + 168 + 2q + 280)/96 = 13 3p + 2q = 1248 – 448 3p + 2q = 800 … (ii) Solving equation, (i) and (ii), we get, p = 200 and q = 100 Hence, required sum = (p + q) = 200 + 100 = 300
World tribal day is celebrated on _____________ ?
Which of the following states have only one representatives each in Lok Sabha?
Consider the following statements:
1.   Sangama dynasty was the first dynasty to rule over Vijayanagar kingdom
2.   Sriranga III w...
In the context of Inflation, consider the following statements:
1. Laspeyre Index is used for the calculation of the Wholesale Price Index.
<...The Vice President of India is elected by the members of an electoral college consisting of __________.
Who said that ‘Education is the manifestation of perfection already in man’?
When we are travelling in a bus, we tend to move forward when the bus is stopped suddenly. This is because of ________.
The Jahangir Mahal at Agra was bunt by
Which Indian state has chosen to rename its jails as "reform homes"?
Which one of the following was not recommended in Macaulay's 1835 Minute on Education?
Relevant for Exams:
