Question 1026830
6000x+3000y+93
x = y+0.003 use this value for x in the formula above:
6000(y+0.003) = 3000y+93
6000y+18 = 3000y+93
3000y = 75 = 0.025(100)= 2.5
The 3000 are invested at 2.5 and the 6000 at 2.5+0.3 = 2.8
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Check:
6000*0.028 = 168
3000*0.025 = 75
. . . . . . .-----
Subtract . . : 93 The investment of 6000 makes 93 more/year than the 3000, just like the problem says