Problema Solution
Lisa sold 5 more pairs of shoes than Dave did. Together they sold 21 pairs. How many pairs of shoes did each person sell?
Answer provided by our tutors
let
l = the number of pairs of shoes that Lisa sold
d = the number of pairs of shoes that Dave sold
Lisa sold 5 more pairs of shoes than Dave did
l = d + 5
together they sold 21 pairs
l + d = 21
by solving the system of equations
l = d + 5
l + d = 21
we find
l = 13 pairs of shoes
d = 8 pairs of shoes
click here to see the step by step solution of the system of equations
Lisa sold 13 pairs of shoes.
Dave sold 8 pairs of shoes.