Both sohan and lallan leave their house together. 36 minutes after sohan goes to the house meets uncle, while lallan after 12 minutes of meeting sohan with his uncle. From lallan 24 hours after meeting, the house bells of uncle sohan and lallan.Plays. Let's say that everyone is walking on a similar move.Is. Know sohan, lallan and the walk of their uncle what will happen?(a) 12: 2(b) 13.2c3(d) 2
Answers
Answer:
2:2:1
Step-by-step explanation:
Correct Question:
Sohan and Lallan left their house simultaneously. Thirty six minutes later, Sohan met his uncle travelling to their house, while Lallan met the uncle twelve minutes after Sohan. Twenty four minutes after his meeting with Lallan, the uncle rang the door bell at Sohan and Lallan’s house. Assume each person travels at a constant speed. Find the ratio of the speeds of Sohan to Lallan to the uncle.
(a) 1 : 2 : 2
(b) 1 : 3 : 2
(c) 3 : 1 : 3
(d) 2 : 1 : 2
The answer is D. 2:1:2
Given:
Sohan and Lallan left their house simultaneously. Thirty six minutes later, Sohan met his uncle travelling to their house, while Lallan met the uncle twelve minutes after Sohan. Twenty four minutes after his meeting with Lallan, the uncle rang the door bell at Sohan and Lallan’s house. Assume each person travels at a constant speed.
To find:
the ratio of the speeds of Sohan to Lallan to the uncle.
Solution;
Sohan meets his uncle in minutes = 36
Lallan meets his uncle in minutes = 36+12 = 48
Let total distance where Sohan meets his uncle from home = 36km
Sohan's speed= d/t = (36/ 36) * 60 = 60km/hr
His uncle takes total time = 12 + 24 = 36 mins
Speed of uncle = (36/36) * 60 = 60km/hr [ because distance is same from home to where uncle meet sohan]
Distance from lallan to home covered by uncle = 60 * (24/60) = 24km
Lallan meets his uncle after 48 mins
Speed of lallan = (24/48) * 60
= 30km/hr [60 is multiplied to convert minutes into hours]
Ration of speed = 60:30:60
= 2:1:2
Hence, the answer is D. 2:1:2
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