Mrs Peh baked 425 more cookies than Tiffany. After Mrs Peh sold 167 of her cookies, she had 3 times as many cookies as Tiffany.
- How many cookies did Tiffany bake?
- How many cookies did Mrs Peh bake?
|
Tiffany |
Mrs Peh |
Before |
1 u |
1 u + 425 |
Change |
|
- 167 |
After |
1 u |
1 u + 258 |
(a)
After
Number of cookies that Tiffany had = 1 u
Number of cookies that Mrs Peh had = 3 x 1 u = 3 u
Before
Number of cookies that Tiffany baked = 1 u
Number of cookies that Mrs Peh baked = 1 u + 425
3 u = 1 u + 425 - 167
3 u - 1 u = 258
2 u = 258
1 u = 258 ÷ 2 = 129
Number of cookies that Tiffany baked
= 1 u
= 129
(b)
Number of cookies that Mrs Peh baked
= 1 u + 425
= 129 + 425
= 554
Answer(s): (a) 129; (b) 554