
David W. answered 08/19/19
Experienced Prof
On Tuesday Shanice bought five hats. On Wednesday half of all the hats that she had were destroyed. On Thursday here were only 17 left. How manybdid she have on Monday?
Number of hat had on Monday: x
Number of hats as of Tuesday: x + 5 [bought 5]
Number of hats as of Wednesday: (1/2)(x+5) [the other half were destroyed]
Number of hats as of Thursday: (1/2)(x+5) = 17 [note:left over from Wednesday = 17]
Solve for x:
(1/2)(x+5) = 17
(x + 5) = 34 [multiply both sides by 2]
x = 29 [subtract 5 from both sides]
Shanice had 29 hats on Monday.
Check:
29 hats on Monday
29+5=34 hats on Tuesday
34/2 = 17 hats on Wednesday
17 hats on Thursday