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22 April, 07:06

Mr. Robinson has 20 students in his martial arts class. The ratio of boys to girls is 4:1. How many boys and girls are in Mr. Robinson's class?

a. 15 boys, 5 girls

b. 5 boys, 15 girls

c. 16 boys, 4 girls

d. 4 boys, 16 girls

Which of the following equations is an example of the distributive property?

a. (5) (3) = (3) (5)

b. 5+3 = 3+5

c. (5) (1+2) = (5) (1) + (5) (2)

d. 15=15

+1
Answers (2)
  1. 22 April, 08:15
    0
    1) Ratio - 4:1

    thus, 4x + 1x = 20

    5x = 20

    thus, x = 20/5 = 4

    thus, x = 4

    and, 4x = 16

    Thus, the answer is (C) 16 boys and 4 girls

    2) According to distributivity, a (b+c) = ab + ac

    Thus, the answer is (C)
  2. 22 April, 09:50
    0
    1.4x+x=20

    5x=20

    x=4 there are 16 girls and 4 boys

    2. c
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