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CAHSEE Math 1.1 Mathematical Reasoning
228 Views

CAHSEE Mathematical Reasoning: Drill 1, Problem 1. Based on this information, which of the following can be determined?

CAHSEE Math 1.2 Mathematical Reasoning
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CAHSEE Math Mathematical Reasoning: Drill Set 1, Problem 2. Which of the following should be the most appropriate first step in solving the equation?

CAHSEE Math 1.3 Mathematical Reasoning
183 Views

CAHSEE Math Mathematical Reasoning: Drill 1 Problem 3. Which of the following is the correct order of steps?

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ACT Math 1.1 Elementary Algebra 441 Views


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Description:

ACT Math: Elementary Algebra Drill 1, Problem 1. What is Ben's current age?

Language:
English Language

Transcript

00:03

Everybody's shmoopin' at ya... you don't hear a word they're sayin...

00:07

In 7 years, Ben will be 6 times Jerry's current age.

00:11

You'd never know there was that big an age difference by looking at their picture.

00:15

What is Ben's current age if J = Jerry's current age and B = Ben's current age?

00:21

And here are the potential answers... OK so what is this question asking?

00:30

It's asking for Ben's current age...

00:31

...but the key thing to notice is that the question is asking for the answer not in terms

00:36

of B, but in terms of J, Jerry years.

00:40

We can start with the variables B and J first.

00:42

We're told that, in 7 years, Ben will be 6 times Jerry's current age.

00:47

"In 7 years" means we add 7 to Ben's current age, and set that equal to 6J.

00:53

So we get B plus 7 equals 6J.

00:56

To isolate B by itself, we can subtract 7 from both sides and get B equals 6J minus

01:02

7... or the answer B.

01:05

As in, "Brownie Batter."

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