Ram and Laxman are two brothers. Ram purchased a mobile handset from the market and sold it at a profit of 10%. Laxman purchased the same
handset at 10% lower price and sold it for 60 rupees more than Ram did, thereby making 100 rupees more profit than Ram made. What was the
ratio of selling prices of Ram and Laxman?
A 22:25
B. 17:19
C. 15:16
D0.89
Answers
Ram and Ali have been fast friends since childhood. Ali neglected studies and now has no means to earn money other than a camel whereas Ram has become an engineer. Now both are working in the same factory. Ali uses camel to transport the load within the factory.
Due to low salary and degradation in health of camel, Ali becomes worried and meets his friends Ram and discusses his problems. Ram collected some data and with some assumptions concluded the following:
i. The load used in each trip is 1000 kg and has friction coefficient = 0.1 and = 0.2.
ii. Mass of camel is 500 kg.
iii. Load is accelerated for first 50 m with constant acceleration, then it is pulled at a constant speed of 5 for 2 km and at last stopped with constant retardation in 50 m.
iv. From biological data, the rate of consumption of energy of camel can be expressed as where P is the power and v is the velocity of the camel. After calculations on different issues, Ram suggested proper food, speed of camel, etc.to his friend. For the welfare of Ali, Ram wrote a letter to the management to increase his salary.
(Assuming that the camel exerts a horizontal force on the load):
The ratio of the energy consumed by the camel during uniform motion for the two cases when it moves with speed 5 to the case when it moves with 10.