Practice A. Analyze each problem. Identify what type of proportion was used then solve the problem. Write your answer on the space provided, If possible you may use the back page.

1. Four equal water pumps can fill a tank in 42 minutes. How long will 6 water pumps of the same kind fill the same tank?

2. A tree casts a shadow of 12 meters when a 5-meter pole casts a shadow of 4 meters. How tall is the tree?

3. In a school survey for Grade 6, they found out that for every 5 girls there were 3 boys. How many girls are there, if there are 111 boys?

i need the computation too please​