Donna wants to pack some oranges into bags.If she packs 10 Oranges in each bag,she will need 7 oranges more.If she packs 9 oranges in each bag,she will have 3 extra oranges not packed. How many oranges are there all together?
+131 10 oranges per bag + 7 additonal
9 oranges per bag + 3 needed
solving the equations would give 93 oranges.
+2498 t-total number of oranges
b-bag
o-orang
packs 10 Oranges in each bag,she will need 7 oranges more:
t-10b=-7
If she packs 9 oranges in each bag,she will have 3 extra oranges not packed
t-9b=3
so you have 2 equations now:
t-10b=-7 (minus them from each other)
t-9b=3
-b=-10
b=10
put b=10 in one of the equations:
t-9b=3 b=10
t-90=3
t=93
