Question
The average weight of 20 students in a class is 50 kg.
If the weight of the teacher is included, the average weight increases by 1 kg. If the weight of the teacher is excluded and replaced with another student weighing 55 kg, what will be the new average weight of the group?Solution
Total weight of 20 students = 20 Ă— 50 = 1,000 kg Including the teacher, new total weight = 21 Ă— 51 = 1,071 kg Teacher’s weight = 1,071 - 1,000 = 71 kg Replacing the teacher with a 55 kg student: New total weight = 1,000 + 55 = 1,055 kg New average = 1,055 Ă· 21 = 50.24 kg Correct Option: a)Â
Consider the given statement(s) and decide which of the given assumption(s) is/are implicit in the statement.
Statement:
The headmistres...
Statement: Scores of students and parents staged a sit-down protest outside the Department of Public Instruction (DPI) for not interven...
Statement: The forest department has embarked on an initiative to plant six crore saplings in the state.
Assumptions:
I. The areas wher...
Statement: D < R = X > T ≥ H
Conclusions: I. D ≤ T II. R > H
Can you make an overall assessment of the present level of stock market index today ?
I. Today, the stock market index has reached lower than the...
Statement: India’s “Power-for all”plan is facing a challenge as states such as Bihar, Uttar Pradesh, Jharkhand, West Bengal and Odisha have indi...
Consider the following statements:
Assertion (A): Alcohol, instead of mercury, is used in thermometers to measure temperatures up to 60°C.
<...Read the passage and choose the option that best captures its central idea:
A philosopher once said, “Do not be angry with the rain; it simpl...
STATEMENT : Opening a cyber cafe in Buxar will be a wastage.
ASSUMPTIONS: I People in Buxar are illiterate.
II People living there don&...
Even a limited strike by the U.S. to diminish North Korea’s missile capabilities, as advised by some strategists in Washington, could instantly tu...
Relevant for Exams:
