The pave the way company is installing a new walkway the installer uses 13paving stones for each foot of walk way he needs 117 paving stones to complete the progect and has 78 paving stones so far how many paving stones will he need to install to finis

Answer

Find out the how many paving stones will he need to install to finish.

To proof

As given

The pave the way company is installing a new walkway

installer uses 13paving stones for each foot of walk way

he needs 117 paving stones to complete the progect and has 78 paving stones so far

let us assume that the number of paving stones will he need to install to finish be x.

Than the equation

x + 78 = 117

x = 117 - 78

x = 39

39 paving stones will he need to install to finish

Hence proved