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SS3: MATHEMATICS - 2ND TERM

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  1. Matrices I | Week 1
    6 Topics
  2. Matrices II | Week 2
    1 Topic
    |
    1 Quiz
  3. Commercial Arithmetic | Week 3
    7 Topics
    |
    1 Quiz
  4. Coordinate Geometry | Week 4
    8 Topics
    |
    1 Quiz
  5. Differentiation of Algebraic Expressions | Week 5 & 6
    7 Topics
  6. Application of Differentiation | Week 7
    4 Topics
    |
    1 Quiz
  7. Integration | Week 8
    8 Topics
    |
    1 Quiz



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A discount is the allowance in percentage allowed a buyer by the seller on the purchase price of an article.

a. Cash Discount: This is the allowance given to the buyer by the seller for payment in cash for an article bought either immediately or within the stipulated time limit.

b. Quantity Discount: This is the allowance given to the buyer the buyer for buying an article above the stipulated quantity.

Examples:

1. A buyer paid #798 for an article over which he enjoyed 5% cash discount.

How much was the market price?

Solution 

Discount = 5%

Percentage paid = (100 – 5)% = 95%

Market Price = \( \frac{798}{95} \; \times \; \frac{100}{1} \)

Market Price = #840.00

2. An article was marked at #25.40k per unit. The seller allows for 2% discount on the purchase of 20-30 units at a time. Find how much a buyer pays for 28units.

Solution

28 units discount is 2%

Amount paid = (98% of #25.40) × 28

= \(\left ( \frac{98}{100} \; \times \; \scriptsize 25.40 \right) \scriptsize \; \times \; 28 \)

= 698.98k

Exercise

1. An article was marked at #25.40 per unit. The seller allows for 3% discount on purchase of 31-40 units and 4% for 41 units and above. Find out how much a buyer of the following quantities will pay

i. 35 units ii. 60 units 

2. A seller marks an article to gain 26% but allows 4% discount. Find the price he sells an article bought for #500

3. Find the time in which #2200.00 generates simple interest on #396 at 3%.

4. Find the compound interest on #9000.00 in 3years at 4% per annum.

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