In an activity, Tammy collected 435 marbles. She collected 3 times as many marbles as Erika.
- How many marbles did Erika collect?
- How many more marbles did Tammy collect than Erika?
(a)
Number of marbles that Erika collected = 1 u
Number of marbles that Tammy collected = 3 u = 435
3 u = 435
1 u = 435 ÷ 3 = 145
Number of marbles that Erika collected
= 1 u
= 145
(b)
Number of marbles that Tammy collected more than Erika
= 435 - 145
= 290
Answer(s): (a) 145; (b) 290