book Maths Puzzle Numerical Ability

The fixed costs for making chicken feed are $100.00. The marginal cost o make each bag of feed is $20. Management decides to charge $30 per bag of feed.

(A) write the cost fu

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book Other Question

4 people are in the math club. How many 2 person teams can be formed from the 4 The sum of the digits of a two digit number is 9. if the digits were reversed the new number would be 9 more than the original number. find the original number.