Answer:
n=178/19
Step-by-step explanation:
Let me know if this helps
Answer:
r = 8%
Step-by-step explanation:
Given that,
Interest, I = $24
Principal, P = $1200
Time, t = 90 days = 90/360 = 1/4 years
We need to find the rate.
We know that,
The simple interest is given by :

Put all the values,

So, the rate is 8%.
-12t = -14
Since both sides are negative, we can multiply them by -1 to make them positive.
12t = 14
t = 14/12
t = 7/6
t = 1.16
I hope this helps! If you have any doubts, feel free to ask.
So here is how to solve the problem.
Let us analyze it first.
S + A = 70
S + L = 80
L + A = 80
Since S + L is equal to L + A, this would mean that S = A.
So S + A = 70 So A = 70/2 = 35kg
And lastly L. L= 80 -35 = 45kgs.
Therefore, Liam's weight is 45kgs.
Hope this explanation helps.
Let me know if you need more help next time. Have a great day!