SAT Math: Using Simple Equations to Solve for Event Duration

To prepare for her upcoming road bike race, Kristin trains on a stationary bike, cycling at an average speed of 10 miles per hour. She begins cycling at 12:00 noon. Once she attains her goal of biking for the equivalent of 40 miles, she takes an hour-long break. At what time does Kristin begin her break?

Heart of AlgebraLinear inequalities in one variable (word problems)
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SATSAT Math
SAT MathAlgebra and Functions
Heart of Algebra
Test PrepSAT Math

Transcript

00:12

does person begin her break She's cycling at ten miles

00:18

an hour she wants to go forty miles be like

00:21

four hours right so well it started at noon that

00:24

seems pretty straight for it is a lot easier than

00:26

the last question Well before we math a joke why

00:29

couldn't the bike stand up It was just too tired

00:33

No wait only we still need to find out how

00:35

long kristin was cycling for you know before she decided

00:38

to take her break We're told that she stops after

00:40

forty miles were also told she's biking in ten miles

00:43

an hour So that's pretty easy right She takes a

00:45

break when t equals four after four hours of riding

00:48

which is four pm so the answer is b and

00:50

it takes an hour long break while then her break

00:53

is from four until five Yeah you can't read problem

00:55

too quickly Otherwise ten miles per hour might falsely register

00:59

is ten hours like the duration of this math problem

01:03

and kristen isn't taking a late night ride so yet 00:01:06.741 --> [endTime] empty Okay we're done