1. Cost Price C.P: The price, at which an article is purchased, is called its cost price, abbreviated as C.P.

Cost Price is amount of money goes out from us when we purchase any article or item.

2. Selling Price S.P: The price, at which an article is sold, is called its selling prices, abbreviated as S.P.

Selling Price is an amount of money came in when we sell an item or article.

3. Profit or Gain: If S.P. is greater than C.P., the seller is said to have a profit or gain.

4. Loss: If S.P. is less than C.P., the seller is said to have incurred a loss.

5. Marked Price: When we purchase any item or article we see the marked price or listed price printed on the label.

6. Profit or Gain = Selling Price (S.P.) – Cost Price (C.P.)

Example: 30% Profit on an article i.e cost price Rs.100/- Selling Price Rs.130/-

7. Loss = Cost Price (C.P.) – Selling Price (S.P.)

If the income of Ram is 10% more than that of Shayam’s income. How much % Shyam’s income is less than that of Ram’s income ?
Method I.
By using formula
less% = r/100+r  ×100 = 10/100+10  × 100
= 10/110 ×100 = 9 1/11%
Method II.

Q2.

Q3.

When numerator of a fraction is increased by 10% and denominator decreased by 20% the resultant fraction becomes 5/8. Find the original fraction ?
Method I.
Let the original fraction be x/y then –

Method II.
Given Fraction = 5/8
Original fraction = 5/8×80/110
= 5/11 Ans.

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