# Difference between revisions of "2009 AMC 10A Problems"

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== Problem 4 == | == Problem 4 == | ||

+ | Eric plans to compete in a triathalon. He can average <math>2</math> miles per hour in the <math>\frac{1}{4}</math>-mile swim and <math>6</math> miles per hour in the <math>3</math>-mile run. His goal is to finish the triathlon in <math>2</math> hours. To accomplish his goal what must his average speed in miles per hour, be for the <math>15</math>-mile bicycle ride? | ||

+ | |||

+ | <math>a)\, \frac{120}{11}\qquad | ||

+ | b)\, 11\qquad | ||

+ | c)\, \frac{56}{5}\qquad | ||

+ | d)\, \frac{45}{4}\qquad | ||

+ | e)\, 12</math> | ||

[[2009 AMC 10A Problems/Problem 4|Solution]] | [[2009 AMC 10A Problems/Problem 4|Solution]] |

## Revision as of 21:57, 11 February 2009

## Contents

- 1 Problem 1
- 2 Problem 2
- 3 Problem 3
- 4 Problem 4
- 5 Problem 5
- 6 Problem 6
- 7 Problem 7
- 8 Problem 8
- 9 Problem 9
- 10 Problem 10
- 11 Problem 11
- 12 Problem 12
- 13 Problem 13
- 14 Problem 14
- 15 Problem 15
- 16 Problem 16
- 17 Problem 17
- 18 Problem 18
- 19 Problem 19
- 20 Problem 20
- 21 Problem 21
- 22 Problem 22
- 23 Problem 23
- 24 Problem 24
- 25 Problem 25

## Problem 1

One can holds ounces of soda. What is the minimum number of cans needed to provide a gallon (128 ounces) of soda? Solution

## Problem 2

Four coins are picked out of a piggy bank that contains a collection of pennies, nickels, dimes and quarters. Which of the following could *not* be the total value of the four coins, in cents?

## Problem 3

## Problem 4

Eric plans to compete in a triathalon. He can average miles per hour in the -mile swim and miles per hour in the -mile run. His goal is to finish the triathlon in hours. To accomplish his goal what must his average speed in miles per hour, be for the -mile bicycle ride?