Question 1

Average of five numbers is 61. If the average of first and third number is 69 and the average of second and fourth number is 69, what is the fifth number ?

Solution

Let the five numbers be a, b, c, d, e in the given order.

a+b+c+d+e = 61*5=305 ----- Eq 1

a+c = 69*2 = 138

b+d = 69*2 = 138

From eq 1: e=305-(138+138) =305-276 =29

B is the correct answer.

Create a FREE account and get:

All Quant Formulas and shortcuts PDF
40+ previous papers with solutions PDF
Top 500 MBA exam Solved Questions for Free

CAT Quant Questions | CAT Quantitative Ability

CAT Progressions and Series Questions CAT Profit, Loss and Interest Questions CAT Algebra Questions CAT Averages Mixtures Alligations Questions CAT Percentages Questions

CAT DILR Questions | LRDI Questions For CAT

CAT DI with connected data sets Questions CAT Games and Tournamnents Questions CAT Venn Diagrams Questions CAT Quant Based LR Questions CAT Special Charts Questions

CAT Verbal Ability Questions | VARC Questions For CAT

CAT Odd One Out Questions CAT Vocabulary Questions CAT Para Summary Questions CAT Reading Comprehension Questions CAT Grammar and Sentence Correction Questions

Follow us on

Boost your Prep!

Download App