Question

Tanu lent 10,000 at 5% simple interest for 7 years and 80,000 at 10% simple in
terest for 4 years.
What is the total interest earned by her?
​

Answer 1

Answer:

₹35,000

Step-by-step explanation:

Case 1,

Data:

• P = ₹10,000
• r = 5%
• t = 7 years
• SI = ?

$\implies$ $\sf{ SI={\Large\frac{PTR}{100}}}$

$\implies$ $\sf{ {\Large\frac{ 10000×7×5 }{100 }}}$

$\implies$ $\sf{100×7×5 }$

$\therefore$ $\sf{ SI=₹3500}$

Case 2,

Data:

• P = ₹80,000
• r = 10%
• t = 4 years
• SI = ?

$\implies$ $\sf{ SI={\Large\frac{PTR}{100}}}$

$\implies$ $\sf{{\Large\frac{ 80000×4×10}{ 100 }} }$

$\implies$ $\sf{800×4×10 }$

$\therefore$ $\sf{ SI = ₹32000}$

Total interest earned = $\sf{3500+32000 }$

$\therefore$ $\boxed{\sf{SI = ₹35500 }}$

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Answer 2

Answer:

answer is 35,000

Step-by-step explanation:

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