Please help me under stand this

Answer:
Step-by-step explanation:
Your multiplying by 5
1 x 5 = 5
2 x 5 = 10
3 x 5 = 15
4 x 5 = 20
Answer:
B = 5 x A
Step-by-step explanation:
1 x 5 = 5
2 x 5 = 10
3 x 5 = 15
4 x 5 = 20