Question

2) 3,380 for 30 Month at 4 ll. p.a. 2 41 .​

Answer 1

Complete question

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Find the S.I. and the amount on:

Rs3,380 for 30 month at 4½ % p.a.

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$\rm \red{answer}$

$\rm \: We \: know \: that \: Rs.3380$

$\rm \: T=30 \: months =30/12 \: years$

$\rm \: R=4(1/2)% p.a =9/2% p.a.$

Here S.I=

$\tt \frac{PTR}{100}$

Substituting the values:

$\rm \: S.I.=$

$(100×2×12)$

$(338×9×30)$

$\sf \: =Rs.380.25$

To find the amount:

$\rm \: Amount =P+S.I$

Substituting the values:

=3380+380.25=Rs.3760.25

Answer is Rs.3760.25

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Additional information

Simple Interest

R = rate% per annum.

T = time.

I = simple interest.

A = amount. Formula for calculating simple interest is S.I = (P × R × T)/100.

Simple Interest Example:

1 Year S.I = (1000 ×5 × 1)/100 = 50

A= 1000 + 50 = 1050

2 Year S.I = (1000 ×5 × 2)/100 = 100

A= 1000 + 100 = 1100

Answer 2

$\bold\red{Answer}$

We know that Rs.3380

T=30 months =30/12 years

R=4(1/2)% p.a =9/2% p.a.

Here S.I= PTR/100

Substituting the values

S.I.= (338×9×30)/(100×2×12)

=Rs.380.25

Amount =P+S.I

Substituting the values=3380+380.25=Rs.3760.25