Jess observed that 60% of the people at a mall on a particular day shopped for clothes. if 2500 people at the mall did not shop for clothes that day, the number of people who shopped for clothes that day was

(3,750 people

60%=did shop

40%=did not shop =2,500

2,500/40  =  x/100

40x = 2,500x100

40x=250,000

x = 250,000/40

x=6,250

   6,250 =all people  at the mall

6,250 - 2,500 =3,750  (60%)

   OR

(2,500 x60)/40 = 3,750

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,