Page 193 - Start Up Mathematics_8 (Non CCE)

AT a Glance

1. If S.P. > C.P., there is a profit.
Profit
Profit = S.P. – C.P. Profit % = ¥100
C.P.
Ê 100 + Profit% ˆ 100 ¥ S.P
S.P. = Á Ë 100 ˜ ¯ × C.P. C.P. = ( 100 + Profit%)

2. If C.P. > S.P., there is a loss.
Loss
Loss = C.P. – S.P. Loss % ¥100
C.P.
Ê 100 - Loss%ˆ 100 ¥ S.P.
S.P. = Á Ë 100 ˜ × C.P. C.P. = (100 - Loss%)
¯

Discount
3. Discount = M.P – S.P. Discount % = ¥100
M.P.
Ê 100 Discount%- ˆ 100 ¥S.P.
S.P. = Á Ë 100 ˜ × M.P. M.P. = ( 100 - Discount %)
¯

4. Tax is calculated on the S.P. of an article.

Review Exercises

Multiple ChoiCe Questions

1. If C.P. = ` 500, S.P. = ` 620, then profit % is:
(a) 24% (b) 24.5% (c) 22% (d) 22.5%
2. A man buys oranges at the rate of 4 for ` 3 and sells them at the rate of 3 for ` 4. His profit % is:
1 7
(a) 76% (b) 75 % (c) 77 % (d) 74%
9 9
3. A dishonest dealer professes to sell his goods at the cost price, but he uses a weight of 900 grams for
1 kg. His gain percent is:
1 1
(a) 12% (b) 11% (c) 12 % (d) 11 %
9 9
4. A single discount equivalent to two successive discounts of 10% and 5% is:
(a) 14% (b) 14.5% (c) 15% (d) 15.5%
5. The list price of a book is ` 130. If it is sold at a discount of 15%, its S.P. is:
(a) ` 110 (b) ` 115 (c) ` 110.50 (d) ` 115.50
6. Anu purchased a perfume for ` 1,770 including tax. If the rate of tax is 18%, the printed price (without
tax) of the perfume is:
(a) ` 1,650 (b) ` 1,700 (c) ` 1,640 (d) ` 1,500

solve Mentally
True or False
1. The cost price and the overhead expenses together make up the effective selling price.
2. If a doll is bought for ` 75 and sold for ` 100, then a profit is made.

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