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
If in a certain way ‘Red’ is related to ‘Banana’, Blue is related to ‘Grapes’ in the same way ‘Black’ is related to who among the follow...
Who among the following appeared for IBPS PO?
Which of the following combination is correct?
In which floor and flat does S live?
Who among the following person goes immediately before I?
On which of the following shelf number does Box G is kept from the top?
Which of the following combination is correct?
Who lives immediately above E in the same type of flat?
How many floors are there in between the floor of the one who likes Yellow and the one who lives at floor 8th?
Who among the following person lives South west of N and North west of Q?
Relevant for Exams:
