maths
posted by meena
of 3 numbers average of first and second number is greaterthan average of second and third number by 39 then what is difference between first and third number

Steve
(a+b)/2 = (b+c)/2 + 39
a+b = b+c + 78
ac = 78
Respond to this Question
Similar Questions

math
Please help me to find the first and third quartiles, Q1 and Q3, of the following set of numbers.13, 7, 15, 13, 13, 12, 9, 11, 19, 9 Qrrange the numbers in ascending order, like this: 7, 9, 9, 11, 12, 13, 13, 13, 15, 19 Now divide … 
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 1
Find three consecutive even numbers such that the difference between 3 times the first number and twice the second number is 1/3 the third number. also, my teacher told me to use an equation. 
Algebra
Four numbers have a total of 92. The first number is twice the second number and the third is 4 more than the sum if the first two. The fourth number is 3 less than the difference of the first two numbers. What are the numbers? 
algebra
Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times the third number is one more than the second number. The second number is equal to the sum of the first … 
algebra
Three numbers are such that the first number is 10 less than twice the second and the second number is 4 more than three times the third. Twice the second number is equal to the sum of the first and third numbers. Find the numbers 
Math
The sum of three numbers equal 92. The second number is 8 more than the first number. The third number is 2 times the second number. What is the first number? 
maths
the sum of 3 numbers is 81 the second number is twice the first and the third number is 6times more than the second. Find the number. 
Math
The average of four possible numbers is 15. The second number is 2 times the first number. The third number is twice the second. What is the largest number? 
math
1) the average of four positive numbers is 15. The second number is 2 times the first number. The third number is twice the second. The last number is the last square of the first number. what is the largest number?