Question
The average weight of 6 people is 80 kg. When two new
people with their weights in the ratio 2:3 joined the group, the average weight of all the people remains the same. Find the difference between the weights of the two new people who joined the group.Solution
ATQ, Sum of the weight of 6 people = 80 × 6 = 480 kg Sum of the weights of all the people including the ones who joined later = 80 × 8 = 640 kg Total weight of two new people = 640 - 480 = 160 kg Let the weight of two new people who joined the group be '2w' kg and '3w' kg, respectively. 2w + 3w = 160 Or, 'w' = (160/5) = 32 So, required difference = 3w - 2w = w = 32 kg
___________ is a permit or certificate allowing the holder to emit carbon dioxide or other greenhouse gases.
Which of the following is a phytokinin?
The three Tier system or The Panchayati Raj system was first started at
Which of the following is popularly known as queen of nut crops?
Feeding habit of Catla is
When plant cells are placed in hypertonic solution, they become____
Iron is an important component of which of the following enzyme?
Sorghum contains toxic substance which is known as
Which of the following is NOT a cooperative related to Agribusiness?
Cryoprotectant used in fish preservation is