Question 26

The average. age of 10 children in a class is 12 years. If two children aged 14 and 16 years join the class,itwill raise the average age by how much?

Solution

Sum of ages of children at start = 12*10 = 120 years
Sum of ages after new joinees join = 120 + 14 + 16 = 150 years

Average age now = 150/12 = 12.5 years
Hence, average age has increased by 6 months.

Create a FREE account and get:

Free SSC Study Material - 18000 Questions
230+ SSC previous papers with solutions PDF
100+ SSC Online Tests for Free

CAT Quant Questions | CAT Quantitative Ability

CAT Venn Diagrams Questions CAT Algebra Questions CAT Progressions and Series Questions CAT Remainders Questions CAT Profit, Loss and Interest Questions

CAT DILR Questions | LRDI Questions For CAT

CAT Data Interpretation Questions CAT Data Interpretation Basics Questions CAT Data change over a period Questions CAT Miscellaneous LR Questions CAT Charts Questions

CAT Verbal Ability Questions | VARC Questions For CAT

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

SSC JE Civil Engineering 2011

The average. age of 10 children in a class is 12 years. If two children aged 14 and 16 years join the class,itwill raise the average age by how much?

CAT Quant Questions | CAT Quantitative Ability

CAT DILR Questions | LRDI Questions For CAT

CAT Verbal Ability Questions | VARC Questions For CAT

Free DILR Questions

Login to your Cracku account

Hello! 👋

Ready to Unlock Your Success?

Please Enter Your OTP

Please enter the following details

Create a free Cracku account