Tatiana went to gamestop.Each game she wnated cost 15$ and she also bought a controller for 30$.If her total was $150,how mnay gakes did she buy?
Let
x -----> number of games she bought
so
30+15x=150
solve for x
15x=150-30
15x=120
x=8
answer is 8 games
Part 2
clara lends half her collection of pens to her sister,Susan.Clara then bus four more pens.If she has 13 ens now,how kany pens did Clara have initially?
Let
x ------> initially quantity of pens
1) clara lends half her collection of pens to her sister,Susan
so
clara has -----> x/2
2) Clara then bus four more pens
Clara has -----> (x/2)+4
3) she has 13 pens now
so
(x/2)+4=13
solve for x
x/2=13-4
x/2=9
x=18 pens
answer is 18 pens