Start learning 50% faster. Sign in now
15 years ago, Average age of 80 teachers = 50 years 8 years ago (just before retirement of Principal), Average age of 80 teachers = 50 + 7 = 57 years And the same time total age of 80 teachers = 80 × 57 = 4560 years And the total age of remaining 79 teachers when just the principal has retired = 4560 – 60 = 4500 years 1 year later (i.e, 7 years ago from present) Total age of 79 teachers (just before the recruitment of new Principal) = 4500 + (1 × 79) = 4579 years And the total age of 80 teachers including new principal just after the recruitment = 4579 + 56 = 4635 years Thus, the present age of all 80 Teachers = 4635 + (7 × 80) = 5195 years ∴ Present average age of all the 80 Teachers = 5195/80 years. Alternate method: Let the present average age of all teachers be X The sum of the age of all the teachers 15 years ago = 80 × 50 = 4000 years 8 years ago the sum of the age of the teachers = 4000 + (7 × 80) - 60 = 4000 + 560 - 60 = 4500 years When new principle is recruited then age of the teachers = 4500 + (79 × 1) + 56 = 4500 + 79 + 56 = 4635 years The sum of the age of the teachers at present = 4635 + (7 × 80) = 4635 + 560 = 5195 years The present average age of all the teachers = 5195/80
Under the Mines and Minerals (Development and Regulation) Act, 1957 who has been given the power to amend the First Schedule and the Fourth Schedule so ...
As per S.4 of the Coal Bearing Areas, Acquisition and Development Act, 1957,___________ shall give a notice of it’s intention to prospect for coal in ...
Section 114 of C.P.C. should be read with
As laid down under the Exim Bank Act the Central Government may advance to the Exim Bank a loan of _______________ at a rate of interest of five and a q...
What is the time frame in which the employer shall submit 5 copies of the draft standing orders proposed by him for adoption in his industrial establish...
The chairman and vice chairman of Central Board constituted under Employees’ Provident Fund are appointed by _______________.
What, as per Payment of Gratuity Act, 1972 is the maximum imprisonment term for the purpose of non-payment of any gratuity payable under this act ?
As per Section 13A of Payment of Wages Act, Every such register and record shall be
preserved for a period of ............ after the date of t...
Which convention provides protection to prisoners of war under International Humanitarian Law?
As per SAT(Procedure) Rules 2000, a memorandum of appeal sent by post shall be deemed to have been presented in the registry