Answer:
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.