Question

In what rate of interest per annum will sum of ruppes 8000 amount to ruppes 9260 in3 1/2

Answer 1

S.I=PRT/100

S.I=8000*x*7/1000*2

1260=8000*7*x/100*2

1260=280x

X=2 5/8%(answer)

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Answer 2

Answer:

4.5

Step-by-step explanation:

$principal = 8000$

$s.i. = amount - principal$

$= 9260 - 8000$

$= 1260$

$time = 3 \frac{1}{2} = 3 \times 2 + 1$

$= \frac{7}{2}$

$let \: the \: rate \: of \: interest \: be \: r$

$r = \frac{100 \times s.i.}{p \times t}$

$r = \frac{100 \times 1260 \times 2}{8000 \times 7}$

REFER the attachment

18/4. (18÷4=4.5)

if want to see how

refer the second attachment.

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@naira017