Ijust want the equation you don't have to solve.
mom and daughter's age add up to 60. the mom is 3 times the daughter's age. how old is the mom and daughter.

What is the shape of the height and weight distribution

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?