Question

Find the missing part of the

unit rate:
21 Cards
3 Piles
=
[?] cards
Pile

Answer 1

7

Explanation:

Because there is 7 cards in 1 pile. it follows the ratio of 7:1

Answer 2

7

Explanation:

Given,

3 Piles = 21 cards

1 Pile = (21 ÷ 3) cards

= 7 cards.