Question

Hi... Solve these plzz......

Answer 1

Question ( a )

Rate = 4 + 9 / 16%

        = ( 4 × 16 + 9 ) / 16 %

         = ( 64 + 9 ) / 16 %

          = 73 / 16 %

Daily interest = 1

Interest = P R T / 100

Since daily interest = 1

Yearly interest = 365 × 1

                        = 365

365 = P R T / 100

T = 1 year .

R = 73/9 %

365 = ( P × 1 × 73 / 16 ) / 100

= > 365 = 73 P / 1600

= > P = ( 365 × 1600 ) / 73

= > P = 5 × 1600

= > P = 8000

ANSWER :

The sum of money was Rs 8,000

Question ( b )

R = ?

Given : A = 3 P

We know that : A = P + I

==> P + I = 3 P

==> I = 3 P - P

==> I = 2 P

So :

2 P = P R T / 100

Cancel P both sides :

= > 2 = R T / 100

But T = 25

So = > 2 = 25 R / 100

= > R / 4 = 2

= > R = 4 × 2

= > R = 8  %

ANSWER :

The rate will be 8 %

Question ( c )

P = Rs 1600

R = 2 + 1/4 %

= > R = ( 2 × 4 + 1 ) / 4 %

= > R = ( 8 + 1 ) / 4 %

= > R = 9 / 4 %

T = 3 years 9 months

   = 3 years + 9 / 12 years

   = 3 years + 3 / 4 years

   = ( 12 years + 3 years ) / 4

   = 15 years / 4

I = P R T / 100

= > I = ( 1600 × 9/4   × 15 / 4 ) / 100

= > I = ( 100 × 9 × 15 ) / 100

= > I = 9 × 15

= > I = 135

A = P + I

= > A = 1600 + 135

= > A = 1735

ANSWER :

The amount is Rs 1735.

Thanks for the question !