Question
The average weight of 100 students in a class is 46 kg.
The average weights of boys and girls are 50 kg and 40 kg respectively. What is the difference between the number of boys and girls?Solution
Let the number of boys and girls be x and (100 - x) respectively. According to the question, Mean = {50x + 40(100 - x)}/100 ⇒ 46 = {50x + 40(100 - x)}/100 ⇒ 4600 = 50x + 4000 - 40x ⇒ 4600 - 4000 = 10x ⇒ x = 600/10 ⇒ x = 60 So, the number of boys is 60. Number of girls = 100 – x = 40 Required difference = 60 – 40 = 20
When was the Motor Vehicles Act enacted and when did it come into force?
What is the minimum number of members to be appointed by Central Government in Competition Commission of India as per the Competition Act, 2002?
What is the time period within which a Banking Company is required to deal or trade in any immovable property acquired by it for its own use?
If Mohan wants to lease 10 Gunthas of his land to Renuka for a period of 3 months he can effect it by which of the following modes?
When there are 3 conciliators they act_______
As per the LLP Act any change in the partners of a limited liability partnership _____________
According to the provisions of the Companies Act any creditor aggrieved by the decision of the Official Liquidator under section 363 may file an appeal...
The show cause notice issued under SEBI (Procedure for Holding Inquiries and Imposing Penalties) 1995 should have a minimum time period of
Sapinda relationship includes relationship by:
1. Half or Uterine blood
2. Full blood
3. Adoption
Select the correct code from below:
What is the limitation period for money in account that is payable on demand?
Relevant for Exams:
