Răspuns:
To find the initial investment, we can use the formula for simple interest:
Simple Interest=P×R×T100Simple Interest=100P×R×T
Where:
PP is the principal amount (the initial investment)
RR is the rate of interest per annum
TT is the time the money is invested for in years
Given:
R=3%=0.03R=3%=0.03 (expressed as a decimal)
T=2T=2 years
The interest earned is £84
We can rearrange the formula to solve for PP:
P=100×InterestR×TP=R×T100×Interest
Substituting the given values:
P=100×840.03×2P=0.03×2100×84
P=84000.06P=0.068400
P=140000P=140000
So, Dylan's initial investment was £1400.
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