Question

If $A=P+\frac{PRT}{100}$, make T the subject of the formula.

When $A=500,P=400$ and $T=10$, find $R$.

• A. $1.2$
• B. $2.5$
• C. $3.3$
• D. $4.2$

Answer 1

The correct option is B $2.5$

$A=P+\frac{PRT}{100}$

$500=400+\frac{400\times R\times 10}{100}$

$R=\frac{100}{40}$ = 2.5

SO, option B is correct.