Question

Pls answer the attachment.

Answer 1

Answer:

14 blue and 8 black balls

Step-by-step explanation:

let the balls x

total balls are 22

Blue balls are 7x and black balls are 4x

7x+4x=22

11x=22

x=22÷11

x=2

blue balls are 7×2=14

black balls are 4×2=8

4 more black balls added to 8 black balls

50% more black balls are added