Quantitative Ability Questions
November 29th, 2009 Posted in Quantitative Ability
Email This Post
Quantitative Ability Questions
Direction for next 2 Quantitative Ability Questions:
1. The first, second and middle terms of an A.P. are a, b and c respectively. Then the sum of the A.P. is
a. 2c(b – a)/c – a
b. 2c(c – a)/b – a + c
c. 2(c – a)/b – a
d. None of these
2. The average age of a husband, wife and their son, 3 years ago was 27 years and that of the wife and son 5 years ago was 21 years. The husband’s present age is
a. 32 years
b. 36 years
c. 38 years
d. 42 years
Related posts:
- Quantitative Ability Questions
- Quantitative Ability Questions
- Quantitative Ability Questions and Answers
Tags: CAT 2009 Math Questions, CAT 2009 Quant Questions, CAT Quantitative Ability Test for MBA, CAT Sample Quantitative Ability Questions, CAT Sample Quantitative Questions, math CAT questions., math questions, Quantitative Ability, Quantitative Ability Questions, Quantitative Ability Sample Questions for CAT, Quantitative Questions and Answers, Quants question, Sample Quantitative Ability
November 29th, 2009 at 11:51 pm
b
c
November 30th, 2009 at 12:03 am
1. b
2. c
November 30th, 2009 at 12:36 am
2.c 38 years…
Fathers age = (27*3 +9) – (21*2+10)=38
can any one expalin me the first question…?? middle terms??
November 30th, 2009 at 3:00 am
2.c
November 30th, 2009 at 3:34 am
1)d
2) c
November 30th, 2009 at 3:41 am
well i would try by my understandin…!!
now 1st term=a,2nd = b, middle = c…
comm diff = d= b-a
no. of terms = n = (2*(c-a)/(b-a))+ 1
….(try by takin ne sample AP n check ..since middle term is single entity,try taking AP with odd terms)
and now solve usin formula.
November 30th, 2009 at 9:03 am
1)b
1st term=a
2nd term=b =>b=a+d =>d=b-a
middle term=c =>c=a+(n-1)/2*d =>n=2*(c-a)/(b-a)+1
now substitute a,n and d in the sum equation i.e.
sum=(n/2)*(2a+(n-1)d)
u get reqd option.
2)c
total age 3 years ago=27*3=81
total age now=81+3*3=90
wife+son’s age 5 years ago=21*2=42
wife+son’s age now=42+2*5=52
hence, husband’s age=90-52=38
November 30th, 2009 at 10:31 am
1.d
2.c
November 30th, 2009 at 11:21 pm
June 28th, 2010 at 10:17 pm
2.c