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vovangra [49]
4 years ago
9

Please help if you can, thank you!

Mathematics
1 answer:
PolarNik [594]4 years ago
6 0
Since 
simple interest = Pit
where
P=principal
i=interest rate
t=time,
we see that the equation is one of joint variation, meaning that simple interest is a direct variation with each variable, P, i or t.

Therefore if ANY one of the variables is doubled, the simple interest is also doubled.
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