Only one in ten people can solve this puzzle – can you? 
Let’s calculate:
Onion × Onion = 9
This means one onion = 3 (because 3 × 3 = 9)
Chicken + Chicken = 20
This means one chicken = 10 (because 10 + 10 = 20)
Final line:
Onion + Chicken × Onion
Remember that multiplication must be done first:
10 × 3 = 30
30 + 3 = 33