AMCAT Averages Quiz-1

The average weight of 39 Students in a class is 23. Among them Sarika garg is the heaviest while Tina dutta is the lightest. If both of them are excluded from the class still the average remains same. The ratio of weight of Sarika garg to Tina dutta is 15:8.Then what is the weight of the Tina dutta?

The ages of four members of a royal family are in the year 2010 are X‟,‟X+12‟,‟X+24‟ and „X+36‟. After some years Oldest among them was dead then average reduced by 3. After how many years from his death, the average age will same as in 2010?

A student of G.D.Goenka school was given a question from averages topic in internal test as follows:
The average of four numbers is 24.5. of the four numbers, the first is 1.5 times the second, the second is 1/3 rd of the third, and the third is 2 times the fourth number. Then what is smallest of all those numbers?

A student of St. Xavier's Collegiate School was given a question from averages topic in final exam as follows:
In Amity University hostel there are 459 students. If the number of students increased by 36, the expenses of the mess increased by Rs .81 Per day while the average expenditure per head reduced by 1. Find the original expenditure of the mess?

The average cost of 32 different Laptops is Rs. 9000. Among them, Apple which is the costliest is 70% higher price than the cheapest Intel. Excluding those both Laptops, the average of the Laptops is Rs.8880. Then what is the cost of Apple Laptop?

The average age of a family of 9 members is 22 years. Suryakumar yadav is the youngest and his age is 6 years, then what was the average age of the family just before Suryakumar yadav was born?

Rahul Dravid scored 8000 runs in a certain number of innings. In the next five innings, he was out of form and hence, could make only 85 runs, as a result his average reduced by 1 run. How many innings did he play in total?

During a maths class , Boman Irani who is a school teacher asked an easy question to test basics of students which is given as follows:
The weights of 19 people are in Arithmetic progression. The average weight of them is 19. If the heaviest is 37 Kgs. Then what is the weight of the Lightest?

Shashi kapoor was asked to solve a question during his maths class from averages topic which is given as:.
The average weight of 40 Students is 32. If the Heaviest and Lightest are excluded the average weight reduces by 1. If only the Heaviest is excluded then the average is 31. Then what is the weight of the Lightest?

The principal of St. Xavier's Collegiate School made some rules to curb unfair means in exm. It was found that the average of 17 students in a class is X. When their marks are arranged in ascending order it was found to be in Arithmetic Progression. The class teacher found that rank the students who ranked 15th, 11th, 9th and 7th had copied the exam and hence they are suspended. Now the average of the remaining class is Y. Then