Answer:
She invested $30,000 at 9%
Step-by-step explanation:
Let the amount invested per percentage be $x and $y respectively
Total investment is 40,000
This means that;
x + y = 40,000 ••••••••••(i)
Now for her income;
9/100 * x = 9x/100
for the 12% = 12/100 * y = 12y/100
Now;
9x/100 + 12y/100 = 3,900
9x + 12y = 390000 •••••••••(ii)
we solve both simultaneously
From i, y = 40,000-x
Substitute this into ii
9x + 12(40,000-x) = 390,000
9x + 480,000-12x = 390,000
3x = 480,000-390,0000
3x = 90,000
x = 90,000/3
x = $30,000
Kayla is correct because if she has 1,000 and Mack has 999, then that means he needs only one more Apple to be equal with Kaylas amount of apples . 999+ 1 = 1,000
Answer:
y-2
Step-by-step explanation:
Answer:123412
Step-by-step explanation:
1222 times 10 is 123422 subtract 10 is 123412 :D
I believe the answer is 21
