Question

Can you explain how to do 7-11 or do them please

Answer 1

Answer:

Step-by-step explanation:

A good thing to remember here is that the word "is" generally means "equals" and the word "of" generally means to multiply.  For #7, "15 is" translates to

15 =

"3/8 of" translates to

15 = 3/8 ×

"of what number" is our unknown, so

15 = 3/8x.  Solve it by multiplying both sides by 8/3.

#8.  "Seventy is" is 70 =

"what decimal part" is our unknown x,

"of 200" is ×200, so

70 = 200x.  Solve that by dividing both sides by 200.  Leave it in a decimal since it asks for the decimal part.

#9. "Two-fifths of" is 2/5 ×

"what number" is our unknown x, and

"is 120" is = 120, so

2/5x = 120.  Solve that by multiplying both sides by 5/2.

#10. Read "what is 60% of 180" to get x = .60(180)

#11.  Read "what is 20% of 35" to get x = .20(35)

Multiply both 10 and 11 to get the answers.