Answer:
$360
Step-by-step explanation:
The intial ratio of the sum shared between Khairul, Michael and Ethan is 6 : 4 : 5.
This would be 6x : 4x : 5x
Khairul gives $30 to Michael and $15.
The ratio is. Now;
(6x - 45) : (4x + 30) : (5x + 15)
We are told this is equal to the ratio 7:6:7
Thus;
((6x - 45) + (4x + 30))/(5x + 15) = (7 + 6)/7
(10x - 15)/(5x + 15) = 13/7
Factorize the left hand side;
5(2x - 3)/5(x + 3) = 13/7
5 will cancel out to get;
(2x - 3)/(x + 3) = 13/7
Cross multiply to get;
7(2x - 3) = 13(x + 3)
14x - 21 = 13x + 39
14x - 13x = 39 + 21
x = 60
Amount Khairul had initially was denoted as 6x.
Thus,6x = 5 × 60 = $360
The 30.6 ounce because it would be less money for more as if you bought 3 11.5 once packages trying to spend less you would end up spending more
Answer:
B
Step-by-step explanation:
the six(6) muffins plus the $3 she saved
Wow - that is an unusual calculation. You'll need a formula for the monthly payment of a monthly annuity, and it is located here:
http://www.1728.org/annuity3.htm (see formula 2)
You'll find THAT page and THIS page very helpful:
http://www.1728.org/annuitym.htm
rate = rate / 1,200
rate =
<span>
<span>
<span>
0.005166666667
</span>
</span>
</span>
n= number of months = 5 * 12 = 60
monthly amount = [Total] / ([(1 + rate)^(n+1) -1] / [rate]) -1
monthly amount =
55,000 / [[( 1<span>.005166666667)^</span>(61)-1] / 1<span>.005166666667] -1
</span>
monthly amount = 55,000 / [[<span><span>1.3693761617</span> -1</span>] / .005166666667]-1
monthly amount = 55,000 / [[.3693761617] / .005166666667]-1
monthly amount = 55,000 /
((<span>
<span>
<span>
71.4921603244)-1)
</span></span></span>monthly amount = 55,000 / (<span>
<span>
70.4921603244)</span></span>
<span><span><span>monthly amount = 780.2286062293
</span>
</span>
</span>
OR 780.23 (rounded)
Yes, it's just that "simple". LOL
