Tuesday

December 1, 2015
Posted by **chanell** on Friday, October 14, 2011 at 2:05pm.

- math -
**Steve**, Friday, October 14, 2011 at 3:11pminvest x at 4%, y at 8%

x + y = 40000

.04x + .08y = 2720

.08x + .08y = 3200

.04x + .08y = 2720

now subtract:

.04x = 480

x = 12000

y = 28000

.04*12000 + .08*28000 = 480 + 2240 = 2720

- math -
**Jessica**, Friday, October 2, 2015 at 2:57pmx + y = 40,000

.04x + 0.08y = 2,720

x = 40,000 - y

.04(40,000 - y) + 0.08y = 2,720

1,600 - .04y + 0.08y = 2,720

1,600 + 0.04y = 2,720

0.04y = 1,120

y = 28,000

x = 40,000 - 28,000

x = 12,000

y = 28,000