Question

find the time.
p=rs5000,a=rs6450,r=12%p.a.​

Answer 1

Answer:

si =6450-5000=1450

r=100*si/p*r

100*1450/5000*12

=12.

Answer 2

${\huge{\star{\underbrace{\tt{\red{Answer}}}}}}{\huge{\star}}$

$\Large{\blue{\tt{\underline{\underline{Given \ :-}}}}}$

${\sf{☞ \ Principal \ = \ ₹5000}}$

${\sf{☞ \ Amount \ = \ ₹6450}}$

${\sf{☞ \ Rate \ = \ 12\% \ p.a}}$

$\Large{\green{\tt{\underline{\underline{To \ find \ :-}}}}}$

${\sf{☯ \ Time \ }}$

$\Large{\purple{\tt{\underline{\underline{Formula \ used \ :-}}}}}$

${\sf{✯ \ Simple \ interest \ = \ Amount \ - \ Principal}}$

${\sf{✯ \ Time \ = \ \frac{Simple \ interest ×100}{Principal×Rate}}}$

$\Large{\orange{\tt{\underline{\underline{Solution \ :-}}}}}$

${\sf{↣ \ Simple \ interest \ = \ Amount \ - \ Principal}}$

${\sf{↣ \ Simple \ interest \ = \ 6450-5000}}$

${\sf{↣ \ Simple \ interest \ = \ ₹1450}}$

Now,

${\sf{\hookrightarrow \ Time \ = \ \frac{Simple \ interest ×100}{Principal×Rate}}}$

${\sf{\hookrightarrow \ Time \ = \ \frac{1450 ×100}{5000×12}}}$

${\sf{\hookrightarrow \ Time \ = \ \frac{\cancel{145000}}{\cancel{60000}}}}$

${\sf{\hookrightarrow \ Time \: = 2 \frac{25}{60} years \: \: or \: \: 2 \frac{5}{12} years}}$

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