Fastest way is to check which number is divisible by 7, since Bunty's salary has 5:7. Only number divisible by 7 is 3150. Quick way to check test of divisibility by 7 for 4 digit numbers is multiply first 2 digits by 2 and add to last 2 digits. 31*2 + 50 = 112, further for 3 digits, 1*2+12=14, 1*3+4=7. I have an algorithm for n digits test of divisibility by 7. Anyway, since this is only divisible by 7 this has to be the answer. Further verifying, 5:7 is 2250:3150(450*5 and 450*7). So 3150-1150=2000. 3:4 is 1500:2000. And original ratio is 1500:2250 = 2:3. Hope this helps.
--- In ascent4cat@yahoogroups.com, "sindhuja" <sindhujaa_2004@...> wrote:
>
> Hi all
>
> Kindly help me solve the following problem in the easiest way possible.
>
> A year ago the salaries of Anup and Bunty were in the ratio 2:3. the ratio of the salaries of last yr to this yr, in the case of Anup and Bunty respectively,are 3:4 and 5:7. If this year, the difference in their salaries is Rs.1150, what is Bunty's salary this year?
>
> choices:
> a.3150
> b.3350
> c.3250
> d.3050
>
> Thanks and Regards
> Sindhuja
>
http://www.2iim.com
Ascent's 2IIM Study Material for CAT - Comprehensive Course Material Prepared by IIM Alumni
http://www.2iim.com/IIM_CAT_classes_correspondence_courses/CAT_correspondence_course.shtml
