Math
posted by Math
I need help with these three problems. I cant figure them out.
3. The difference of two numbers is tripled. The result is decreased by 1. If the lesser of the two numbers is 4 the result is 8.3. Find the greater number.
4. A number increased by 21 is ewuivalent to half the number increased by 18.5. find the number.
11. Kerry comutes 60 mi per day. If she drives 30 mi/h during the morning rush and returns over the same route at 50 mi/h how much time does she typically spend commuting each day.
Please help me and thank you very much!

Riley
First set up problems to solve each one assiging variables to each unknown. Remember, you need the same number of problems as you have variables.

RickP
Convert the words into one or more mathematical equations. I'll get you going on the first one.
"The difference of two numbers ..."
x  y
"... is tripled."
(x  y) * 3
or equivalently
3(x  y)
"The result is decreased by 1."
3(x  y)  1
"If the lesser of the two numbers is 4 ..."
y = 4, so we have
3(x  4)  1
"the result is 8.3."
3(x  4)  1 = 8.3
"Find the greater number. "
solve the above for x.
Respond to this Question
Similar Questions

Int Algebra
The difference of two numbers is 7. The sum of the numbers is 1. What are the numbers? 
Math
Suppose you have two numbers. The difference of the two numbers is 12. The product of the two numbers is 17. Multiply the larger of the two numbers by 100, add 50 times the smaller number to that, round the total to the nearest whole … 
math... sorry.. 1 more question
sorry but i have 1 more question... the sum of two numbers is 30. If three times the greater number is subtracted by 2 times the lesser number, the result is 30. What is the product of the two numbers? 
math
I have no clue how to figure this out! Can you tell me how to figure it out? 
Algebra 1 Honors
When two numbers are added together, the result is 45. Twice the greater number is six more than five times the lesser number. What are the numbers? 
Algebra 1 Please Help !!!!!!!!:D
When two numbers are added together, the result is 45.Twice the greater number is six more than five times the lesser number. What are the numbers. 
Grade 8 Math
Can you write them in Mathematical/numbers form I'll solve them myself. i don't really get it though i have written the first one in mathematical for but i'm not sure if that's right. 1. When six is subtracted from five times a certain … 
Algebra
The sum of two numbers is 6. The result when the greater number is decreased by twice the lesser is 9. Let x be the greater number and y be the lesser number. Find the numbers. Thank you 
algebra
The sum of two numbers is 19.Five times the lesser number is four more than twice the great.What are the numbers? 
maths plse help me..
When the greater of the two numbers increased by 1 divides the sum of the numbers the result is3/2 .when the difference of these numbers is divide by the smaller ,the result is 1/2 .find the numbers