Principal = 5300=5300 rupees
annual rate of interest = 6.5 \%=6.5%
total amount = 6678=6678 rupees
period =

years

Using the formula:

where

A is the total amount

P is the principal

I is the Simple Interest

As per the statement:

Principal(P) = 5300 rupees.

rate of interest(r) = 6.5% = 0.065

Total amount(A) = 6678 rupees.

Then using above formula we have;

Subtract 5300 both sides we get;

or

We have to find the time period.

Using formula of Simple interest:

where r is the rate of interest (in decimal)

here, r = 6.5% = 0.065

Substitute the given values top find t:

⇒

Divide both sides by 344.5 we have;

Therefore, the time period t in years is 4 years

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

true

step-by-step explanation: