Math, asked by anu8383, 2 months ago

The S.I of rupees 800 is rupees 216,if the rate percent of interest pa.is 1/3 of the no.of years then the rate per annum is​
With explanation

Answers

Answered by nutansharma1106
1

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yes it is true statement

Answered by palakbhadauria1
0

Step-by-step explanation:

SOLUTION

Using above two equations, we will find the total cost price of the articles.

Gain% = Profit / CP × 100

=> 10 = (SP - CP)/CP × 100

=> 10 = (660 - CP)/CP × 100

=> 10 = (66000 - 100CP)/CP

=> 10CP = 66000 - 100CP

=> 110CP = 66000

=> CP = 600

Hence the cost price of watch + pen = Rs.600

PART 2: FINDING INDIVIDUAL CP

According to the 2nd case we are given:

Given

Watch SP = Rs.435

Pen SP = Pen CP = Let it be y.

Given

Total Selling price = Rs.(435 + y)

Loss Percentage = 5%

Total CP = Rs.600 (as calculated)

FORMULA:

Loss % = Loss/CP × 100

Loss = Cost Price - Selling Price

SOLUTION

Loss% = Loss/CP × 100

=> 5 = (CP - SP)/CP × 100

=> 5 = [600-(435+y)]/600 × 100

=> 5 = (165 - y)/6

=> 30 = 165 - y

=> y = 165 - 30

=> y = 135

Now, we got the selling price which is equals to the cost price of the pen = Rs.135.

Total cost price = Rs.600

Hence cost price of watch is 600 - 135 = 465

Hence, the cost price of watch is Rs.465

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