Question

Interest earned on Rs 9000 is 400 more than the interest earned on Rs 7000. If both the sum are invested at the same rate of interest for 4 years, find the rate of interest.
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Answer 1

Answer:

The gain percentage is 20%.

Step-by-step explanation:

For Rs. 250, the shopkeeper purchased 100 eggs and among them, 10 eggs were broken.

Then the cost of purchase (CP) = 250 Rs.

So, the remaining number of eggs is (100 - 10) = 90.

If he sold the renaming eggs at the rate of rupees 40 per dozen, then the sale price (SP) of the eggs will be \frac{40 \times 90}{12} = 300

12

40×90

=300 Rs.

Since the cost of the purchase is less than the sale price, so, he makes a gain.

So, the gain percentage is \frac{300 - 250}{250} \times 100\% = 20\%

250

300−250

×100%=20% . (Answer)

Answer 2

Hola mate

Here is your answer -

For Rs. 250, the shopkeeper purchased 100 eggs and among them, 10 eggs were broken.

Then the cost of purchase (CP) = 250 Rs.

So, the remaining number of eggs is (100 - 10) = 90.

If he sold the renaming eggs at the rate of rupees 40 per dozen, then the sale price (SP) of the eggs will be \frac{40 \times 90}{12} = 300

12 /  40×90  =300 Rs.

Since the cost of the purchase is less than the sale price, so, he makes a gain.

So, the gain percentage is \frac{300 - 250}{250} \times 100\% = 20\%  x  250

300−250 ×100%=20%