Answers

2015-09-29T15:39:33+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let the expenditure be 5a and the savings be a 

so total salary = 5a + a = 6a

on 25 % increment 

6a x 25 % + 6a = 6a/4 + 6a =  15a/2 

so increment in the  savings = 15 % 

let the savings amount be b 

 ⇒ (b-a)/a x 100 = 15 

⇒ b = 15 x a/100 + a

⇒ b = 23a/20 

so total expenditure amount = 15a/2 - 23a/20 = 127a/20

so increase = 127a/20 - 5a = 27a/20 

percent increase = 27a/100a x 100 = 27 % ANSWER
2 3 2
2015-09-30T16:43:06+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Old  Salary = T          Expenditure = E           and    savings = S
new salary = T"        new expenditure = E"        new savings = S"

       E :  S = 5 : 1          =>   E = 5 S

       Salary  = T = E + S  = 6 S

        S" = S + 15/100 S = 23 S/20

        T" =   T + T* 25/100 = 5 T /4  =  5*6S/4 = 15 S/2

        T"  =   E" +  S"
         15 S / 2  =  E" + 23 S /20

  =>  E" = 15 S/2 - 23 S /20 = 127 S /20

So expenditure increased from E = 5 S  to  E" = 127S /20
  % increase =  [127/20 - 5] * 100 / 5 =  27 %
1 5 1