1. Mathematics
2. Algebra
3. Basic Algebra
4. 23611

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The fundamental formula for such problems is

where d represents the distance covered when moving at a speed s during a length of time t.

This formula can be solved for s or t
(if d is in miles and t is in hours, then s has the units of miles/hour)

Smith bicycled 45 miles going east from Durango, and Jones bicycled 70 miles. Jones averaged 5 miles per hour more than Smith, and his trip took one-half hour (1/2 hr) longer tan Smith's.
- Write an expression for Jones' speed in terms of Smith's speed
- Write an expression for Smith's speed
- Write an expression for the time it takes Smith to travel 45 miles
- Write an expression for the time it takes Jones to travel 75 miles
- Write an expression for Jones' time in terms of Smith's time
- Write an equation for Jones' time in terms of Smith's time

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