Question

Lisa Chen invested $24,000, part at 8% and the rest at 7.2%. How much did she invest at each rate if her income from the 8% investment is two thirds that of the 7.2% investment?

Answer 1

How much of an 18% solution of sulfuric acid should be added to 360 ml of a 10% solution to obtain a 15% solution?

Answer 2

e+r = 24000 ; e = 24000 - r

e(.08) = 2r(.072)/3

Answer 3

im get r = 15000; but id have to dbl chk that

Answer 4

$15,000 at 7.2% and $9,000 at 8% thats what i got

Answer 5

15000 + 9000 doesnt = 45000 tho :)

Answer 6

...... nvr mind; my mind was lost lol

Answer 7

15 at 7.2 and 9 at 8% looks good

Answer 8

thanks bro!