Question

Sadie is 3 years older than Kareem, and Kareem is twice as old as Nadra. The sum of their ages is 33.

Answer 1

Answer:

The correct answer is:

In Step 1, the student should have used One-half x to represent Nadra’s age, and written the equation (x + 3) + x + one-half x = 33.

Step-by-step explanation:

Lets solve the problem step by step correctly

Let x be the age of Kareem

Let s be sadie's age

n be Nadra's age

According to "Sadie is 3 years older than Kareem"

$s = x+3$

And According to "Kareem is twice as old as Nadra"

x = 2n

n = x/2

Step 1: Writing the equation

$s+x+n = 33\\x+3+x+\frac{x}{2} = 33$

Step 2: Solving the equation:

$2x+\frac{x}{2} = 33-3\\\frac{4x+x}{2} = 30\\\frac{5x}{2} = 30\\5x = 60\\x = 12$

Step 3

Kareem's Age = 12

Sadie's Age = x+3 = 12+3 = 15

Nadra's Ade = 12/2 = 6

The student made the error in Step 1 where he wrote the equation.

Hence,

The correct answer is:

In Step 1, the student should have used One-half x to represent Nadra’s age, and written the equation (x + 3) + x + one-half x = 33.

Answer 2

Answer:

its a

Step-by-step explanation:

got it right on edge 2020