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A sum of £350 is invested at simple interest and amounts to £476 after 3 years. Calculate

(a) the total interest
(b) the rate per cent per annum. ​


Sagot :

Answer:

(a) $126

(b) .453333%

Step-by-step explanation:

(a) 476 - 350 = $126

(b)

[tex]si = p \times r\times t \\ 476 = 350 \times r\times 3 \\ 476 = 1050r \\ \frac{476}{1050} = r \\ r = 0.453333\%[/tex]