A packet of sweets contains only yellow and purple sweets. The ratio of yellow to purple sweets in the packet is 2:1. If there are 9 sweets in total, how many purple sweets are there?

there are 3

3 purple

Step-by-step explanation:

yellow: purple: total

2 : 1 : 2+1 = 3

We have 9 total sweets so we need to multiply each number by 3

2*3 : 1*3 : 3*3

6 : 3 : 9

There are 6 yellow 3 purple and 9 total sweets