MATH SOLVE

2 months ago

Q:
# 85 is 20% of what number?Enter your answer in the box.[ ]81 is 18% of what number?Enter your answer in the box.[ ]What number is 40% of 135?Enter your answer in the box.[ ]Olivia wants to walk 8000 steps today. She walked 45% of this total before lunch.How many steps did Olivia walk before lunch?Enter your answer in the box.[ ]Mary delivers 32 newspapers to her customers in 25 minutes. These deliveries represent 64% of her customers.How many customers does Mary have?16205057

Accepted Solution

A:

85 is 20% of what number?

85 = 20% Γ n

85 = .20n

85/.20 = .20n/.20

[n = 425]

81 is 18% of what number?

81 = 18% Γ n

81 = .18n

81/.18 = 18n/.18

[n = 450]

What number is 40% of 135?

n = 40% Γ 135

n = .40Γ135 = 54

[54]

Olivia wants to walk 8000 steps today. She walked 45% of this total before lunch.

How many steps did Olivia walk before lunch?

s = 45% Γ 8000

s = .45Γ8000 = 3600

[3600]

Mary delivers 32 newspapers to her customers in 25 minutes. These deliveries represent 64% of her customers.

How many customers does Mary have?

32 = 64% Γ n

32 = .64n

32/.64 = .64n/.64

n = 50

[50]

85 = 20% Γ n

85 = .20n

85/.20 = .20n/.20

[n = 425]

81 is 18% of what number?

81 = 18% Γ n

81 = .18n

81/.18 = 18n/.18

[n = 450]

What number is 40% of 135?

n = 40% Γ 135

n = .40Γ135 = 54

[54]

Olivia wants to walk 8000 steps today. She walked 45% of this total before lunch.

How many steps did Olivia walk before lunch?

s = 45% Γ 8000

s = .45Γ8000 = 3600

[3600]

Mary delivers 32 newspapers to her customers in 25 minutes. These deliveries represent 64% of her customers.

How many customers does Mary have?

32 = 64% Γ n

32 = .64n

32/.64 = .64n/.64

n = 50

[50]