LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
92 views
in Aptitude by (59.9k points)
closed by
Seven friends spent Rs. 14 each on a project. The eighth friend spent Rs. 21 more than the average expenditure of all. What is the amount of total money spent by them ?
1. 136
2. 133
3. 134
4. 132

1 Answer

0 votes
by (103k points)
selected by
 
Best answer
Correct Answer - Option 1 : 136

Given:

Seven friends spent Rs.14 each on a project. The eighth friend spent Rs.21 more than the average expenditure of all. 

Concept used:

Average

Calculation:

Let the average expenditure of all eight friends be Rs. x

Seven friends spend Rs.14 on a project 

Sum = 14 × 7 = Rs.98

As per the question 

⇒ \(\frac{{98\ +\ x\ +\ 21}}{8} = x\)

⇒ x + 119 = 8x

⇒ 7x = 119

⇒ x = 17

Total amount spend by them all 

⇒ 98 + (17 + 21) = Rs.136

 

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...