Answer:
The interest rate is 8% p.a.
Step-by-step explanation:
Simple interest changes by the same amount each year (per annum)
So in this case, it is $480 per year ($4800/10 years)
480/6000 = is 8%
The interest rate is 8% p.a.
The answer is 50 because the disease is spreadimg by 5%
Answer:
1. B 2. D
Step-by-step explanation:
Answer:
x = 44/19, y = 33/20
Step-by-step explanation:
Multiply the first eq by 18, to get:
90/y - 36/x = 39
so 36/x = 90/y - 39
in this form we can plug it into the second eq:
90/y - 39 - 24/y = 1 =>
66/y = 40 =>
y = 66/40 = 33/20
Fill that in the first:
100/33 - 2/x = 13/6 =>
200/66 - 143/66 = 2/x =>
57/66 = 2/x =>
57x = 2*66
x = 132/57 = 44/19