HEEEEEEEEEEELPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!

2nd question is Acc 2, just calculate the interests and you'll know the diff. Simple interest will be 0.07*3100 each year for 15 years. compound interest will be 0.05*3100 for year one and then year 2 0.05*(3100+0.05*3100) and so on.

The formula for calculating compound interest is P = C (1 + r/n)nt – where ‘C’ is the initial deposit, ‘r’ is the interest rate, ‘n’ is how frequently interest is paid, ‘t’ is how many years the money is invested and ‘P’ is the final value of your savings

or just use this https://www.thecalculatorsite.com/finance/calculators/compoundinterestcalculator.php
 
1st question you have to multiply the chances of it being red at each intersection so P(Both red)=(4/5)*(3/4) => P(Both red)=3/5;
 
Haven't done GCSE maths in a little while but from my understanding:

1) Times the two probabilities together - 4/5 * 3/4 = 12/20 = 3/5

2)Simple interest - 3100 * 0.07 = £207
207*15 = 3105
3100+3105 = 6205

Compound interest
3100*1.05¹⁵= 6444.67735618

Rounded to 1p = 6444.68
 
CLOSE SOME FUCKING TABS

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2nd question is Acc 2, just calculate the interests and you'll know the diff. Simple interest will be 0.07*3100 each year for 15 years. compound interest will be 0.05*3100 for year one and then year 2 0.05*(3100+0.05*3100) and so on.

The formula for calculating compound interest is P = C (1 + r/n)nt – where ‘C’ is the initial deposit, ‘r’ is the interest rate, ‘n’ is how frequently interest is paid, ‘t’ is how many years the money is invested and ‘P’ is the final value of your savings

or just use this https://www.thecalculatorsite.com/finance/calculators/compoundinterestcalculator.php
:Nerdemoji:
 
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