exam Maths Puzzle Numerical Ability

how could i make a system of equations (2) for this problem: sue is 4 years younger than sally. in 3 years sally will be twice as old as sue. how old are they now?

Read Solution (Total 0)

exam Other Question

find the function , quation of the line, that mathmatically models the data where the imput is the year (x) and the output is the cost of the war (y)
2007 and predict for 2008
2007 cost is 442 billion Cleaning Sidewalks. Edgar can blow the leaves off the sidewalks around the capitol building in 2 hours using a gasoline-powered blower. Ellen can do the same job in 8 hours using a broom. How long would it take them working together?