Free practice · numeric · medium

Practice

Scale an equivalent ratio

A fictional plan uses 18 boxes for 3 equal routes. At the same rate, how many boxes are planned for 7 routes?

Ratio direction map

Label both quantities before reducing to a per-one rate

  1. LabelQuantity A compared with B
  2. DirectChoose the requested per-unit direction
  3. ReduceDivide both parts consistently
  4. ScaleApply one factor to both parts
  5. CheckUnits and cross-products agree

Direction determines meaning. Preserve the numerator and denominator units, scale both parts together, and substitute the result to check the relationship.