Answer:
15 minutes i think
Step-by-step explanation:
45÷6=7.5
meaning 7.5 minutes per girl
so 4 girls would be 30 minutes of work
so 45-30=15
width = 2n+8
length = 3 * width = 3*(2n+8) = 6n+24
Perimeter = 2(l+w)
= 2( 6n+24 + 2n+8)
= 2( 8n+32)
96 = 16n +64
-64 -64
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32 = 16n divide by `16
2 = n
width = 2n+8 = 2*n + 8= 4 + 8 = 12
length = 3*width = 3*12 = 36
Answer:
the value of the investment after 3 years= £11,904
Step-by-step explanation:
sarah invests £9600 at a simple interest rate of 8% per year
number of years = 3
Formula for simple interest
I = P*n* r
P is the initial amount invested= 9600
r is the rate of interest = 8% = 0.08
n = number of years = 3
Now we find interest using formula
I = 9600 * 0.08 * 3= 2304
Interest amount is 2,304
Now we add the interest with the initial amount to get the value of investment after 3 years
9600 + 2304= 11904
Answer:
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Step-by-step explanation:
