model 8 find monthly income Practice Questions Answers Test with Solutions & More Shortcuts
average PRACTICE TEST [9 - EXERCISES]
model 1 basic average questions
model 2 average of consecutive numbers
model 3 twice, thrice, one third etc. of numbers
model 4 find nth average from 1st & last number
model 5 find new average from error
model 6 find average of excluded number
model 7 average on ages/weight
model 8 find monthly income
model 9 average on cricket/exam
Question : 1 [SSC CHSL 2014]
The average monthly income of P and Q is Rs.5, 050. The average monthly income of Q and R is Rs.6, 250 and the average monthly income of P and R is Rs.5,200. The monthly income of P is
a) Rs.5,000
b) Rs.4,050
c) Rs.4,000
d) Rs.3,500
Answer »Answer: (c)
Total monthly income of P and Q = 2 × 5050 =Rs.10100
Total monthly income of Q and R = 2 × 6250 =Rs.12500
Total monthly income of P and R = 2 × 5200 =Rs.10400
On adding all three,
Total monthly income of 2(P + Q + R)
=Rs.(10100 + 12500 + 10400)
=Rs.33000
∴ Total monthly income of (P + Q + R) = $33000/2$
=Rs.16500
∴ P’s monthly income
=Rs.(16500 – 12500)
=Rs.4000
Question : 2 [SSC CGL Tier-I 2016]
A man spends in 8 months as much as he earns in 6 months. He saves Rs. 6000 in a year. His average monthly income is :
a) Rs. 1800
b) Rs. 2150
c) Rs. 2000
d) Rs. 2400
Answer »Answer: (c)
Let the average monthly income of man be Rs. x.
∴ Man’s annual income = Rs. 12x
∴ Man’s annual expenses
=Rs.$({6x×12}/8)$
=Rs.9x
∴ Savings = 12x – 9x = Rs. 3x
∴ 3x = 6000
⇒ x = $6000/3$ = Rs. 2000
Question : 3 [SSC CPO 2016]
The average salary of all the associates in a team is Rs. 16000. The average salary of 7 senior associates is Rs. 24000 and the average salary of the rest is Rs. 12000. How many associates work in that team?
a) 24
b) 23
c) 22
d) 21
Answer »Answer: (d)
Total members in the group = x
Non–senior members = x – 7
According to the question,
16000x = 24000 × 7 + (x – 7) × 12000
⇒ 16x = 24 × 7 + (x – 7) × 12
⇒ 16x = 168 + 12x – 84
⇒ 16x – 12x = 168 – 84
⇒ 4x = 84
⇒ x = $84/4$ = 21
Question : 4 [SSC SAS 2010]
The average monthly income of X and Y is Rs.5050. The average monthly income of Y and Z is Rs.6250 and the average monthly income of X and Z is Rs.5200. The monthly income of X is :
a) Rs.5000
b) Rs.4000
c) Rs.3500
d) Rs.4050
Answer »Answer: (b)
X + Y =Rs.(2 × 5050) =Rs.10100
Y + Z =Rs.(2 × 6250) =Rs.12500
z + x =Rs.(2 × 5200) =Rs.10400
Adding all three,
2 (X + Y + Z) =Rs.(10100 + 12500 + 10400)
=Rs.33000
⇒ X + Y + Z = Rs.16500
∴ X = (X + Y + Z) – (Y + Z)
=Rs.(16500 – 12500) =Rs.4000
Question : 5 [SSC CHSL 2014]
The average salary of all the workers in a workshop is Rs.8,000. The average salary of 7 technicians is Rs.12,000 and the average salary of the rest is Rs.6,000. The total number of workers in the workshop is
a) 23
b) 22
c) 21
d) 20
Answer »Answer: (c)
Total workers = x (let)
∴ 7 × 12000 + (x – 7) × 6000 = 8000 x
⇒ 84000 + 6000 x – 42000 = 8000 x
⇒ 8000 x – 6000 x = 42000
⇒ 2000 x = 42000
⇒ x = $42000/2000$ = 21
IMPORTANT quantitative aptitude EXERCISES
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Basic Average Questions Practice Test, Shortcuts, Tricks, PDF »
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New Average Aptitude MCQ Average of Consecutive Numbers »
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Top 99+ Average Aptitude: Twice, One Third of Numbers MCQ »
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New +99 Average Aptitude MCQ Find nth Average of Numbers »
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99+ Average Aptitude Find New Average from Error MCQ Test »
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Top 99+ Aptitude MCQ Test on Average With Excluded Number »
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Top 99+ Aptitude Average on Ages & Weights MCQ Test Quiz »
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Top Aptitude Average MCQ Find Monthly Income for Average »
-
Top 149+ Aptitude Average on Cricket & Exam MCQ Test Quiz »
model 8 find monthly income Shortcuts »
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Click to Start..average Shortcuts and Techniques with Examples
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model 1 basic average questions
Defination & Shortcuts … -
model 2 average of consecutive numbers
Defination & Shortcuts … -
model 3 twice, thrice, one third etc. of numbers
Defination & Shortcuts … -
model 4 find nth average from 1st & last number
Defination & Shortcuts … -
model 5 find new average from error
Defination & Shortcuts … -
model 6 find average of excluded number
Defination & Shortcuts … -
model 7 average on ages/weight
Defination & Shortcuts … -
model 8 find monthly income
Defination & Shortcuts … -
model 9 average on cricket/exam
Defination & Shortcuts …
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