Curriculum
Course: Mathematics — First Preparatory
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Curriculum

Mathematics — First Preparatory

Unit 1: Numbers

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Unit 2: Algebra

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Unit 3: Statistics

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Unit 4: Geometry

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Text lesson

Applications of Ratio and Proportion

Mathematics — First Preparatory

Applications of Ratio and Proportion

Lesson summary

Lesson summary

  • Drawing length = real length ÷ n for a scale 1 n, and both lengths must use the same unit.
  • To divide a quantity in a given ratio, add the parts, find the value of one part, then multiply it by each part.
  • A percentage is a fraction with denominator 100. Discount = price × percentage ÷ 100.
  • In direct proportion, when one quantity increases by a ratio, the other increases by the same ratio.
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