Kristi jogged for 1/4 of an hour swam for 2/3 of an hour and rode her bike for 4/5 of an hour how long did she exercise? answer 1 hr 43 min
Find the best buy on sugar (1LB is 16oz. )1 lb for $1.29, 12oz for $1.09 2 lbs 4 oz for $3.09 10 oz for $.99 answer 1 lb. for $1.29
Please recheck your arithmetic in your first problem. My answer is 10 minutes different than yours.
I agree with your second answer.
I get the same answer as melody on the first one, but please do check my arithmetic:
1/4 hr = 60 / 4 = 15 min
2/3 hr = 120 / 3 = 40 min
4/5 hr = 240 / 5 = 48 min
15 + 40 + 48 = 103 min = 1 hr 43 min
Thanks, Jim. I was wrong -- and you and Melody are correct.
After doing a dozen of these answers, I can barely remember that 2+2=5 :-)
<g> I like your sense of humor.
To find the total time Kristi exercised, we need to find the sum of the time spent jogging, swimming, and riding her bike.
Given that jogging took 1/4 of an hour, swimming took 2/3 of an hour, and biking took 4/5 of an hour, we can add these fractions together.
To add fractions, we need to find a common denominator. In this case, the least common multiple (LCM) of 4, 3, and 5 is 60.
Now, we can convert the fractions to have a denominator of 60:
Jogging: 1/4 of an hour = (1/4) * 60 minutes = 15 minutes
Swimming: 2/3 of an hour = (2/3) * 60 minutes = 40 minutes
Biking: 4/5 of an hour = (4/5) * 60 minutes = 48 minutes
Now, we add the times together:
15 minutes + 40 minutes + 48 minutes = 103 minutes.
Since there are 60 minutes in 1 hour, we can divide 103 by 60 to convert to hours and minutes:
103 minutes ÷ 60 = 1 hour and 43 minutes.
Therefore, Kristi exercised for 1 hour and 43 minutes.
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To find the best buy on sugar, we need to compare the prices and quantities of each option.
Option 1: 1 lb for $1.29
Option 2: 12 oz for $1.09
Option 3: 2 lbs 4 oz for $3.09
Option 4: 10 oz for $0.99
First, we need to convert the quantities to a common unit. Since 1 lb is equal to 16 oz, we can convert the options as follows:
Option 1: 1 lb = 16 oz
Option 2: 12 oz (no conversion needed)
Option 3: 2 lbs 4 oz = (2 * 16) + 4 = 36 oz
Option 4: 10 oz (no conversion needed)
Now, we can calculate the price per ounce for each option:
Option 1: $1.29 / 16 oz = $0.08 per oz
Option 2: $1.09 / 12 oz ≈ $0.091 per oz
Option 3: $3.09 / 36 oz ≈ $0.086 per oz
Option 4: $0.99 / 10 oz = $0.099 per oz
Comparing the price per ounce, we see that option 1 has the lowest price per ounce at $0.08 per oz. Therefore, the best buy on sugar is 1 lb for $1.29.