Question

a sum amounts to rs 2400 at 15% for 4 years .find the sum

Answer 1

p+prt/100
2400+(2400*15*4)/100
2400+2460/100
2400+24.6
2424.6




hope this helps ...actuall i didn't get to know what you are asking about

Answer 2

$a =p (1 + \frac{r}{100} )^{4} \\ 2400 = p(1 + \frac{15}{100} ) {}^{4} \\ 2400 = p( \frac{100 + 15}{100} ) { }^{4} \\ 2400 = p( \frac{115}{100} ) {}^{4} \\ 2400 = p \times \frac{115 \times 115 \times 115 \times 115}{100 \times 100 \times 100 \times 100} \\ p = \frac{2400 \times 100 \times 100 \times 100 \times 100}{115 \times 115 \times 115 \times 115} \\ p = 1372.20$