The average of 3 numbers is 18. If the first number is increased by 5, the second is doubled and the third is tripled, the average becomes 34. If the first number is decreased by 5, the second number is tripled and the third number is doubled, the average becomes 48. Which is the largest number?

unknown values: y

equation: (x + y + z) / 3 = 18

equation: ((x + 5) + 2*y + 3*z) / 3 = 34

equation: ((x - 5) + 3*y + 2*z) / 3 = 48

answer: 49

What is the sum of 6 �� 103 and 3 ��102?

unknown values: x

equation: x = 6 * 103 + 3 * 102

answer: 924

The mean of six numbers is 5. A seventh number is added and the new mean is 6. Find the seventh number?

unknown values: x

equation: m = 6 * 5

equation: m + x = (6+1) * 6

answer: 12

the sum of 3 numbers equal 64. The second number is 3 more than the first. The third number is 11 less than twice the first. Find the numbers.

unknown values: x, y, z

equation: x + y + z = 64

equation: y = x + 3

equation: z = 2*x -11

answer: 18; 21; 25

The sum of 3 consecutive odd integers is 40 more than the smallest. Find the integers?

unknown values: x, y, z

equation: x + 2 = y

equation: y + 2 = z

equation: x + y + z = 40 + x

answer: 17; 19; 21

What is the value of x?here's the equation: 3/5(x+2)=12.

unknown values: x

equation: 3/5(x+2)=12

answer: 18

The sum of the digits of a two digit number is one third of the number. The units digit is 5 more than the tens digit. What is the number?

unknown values: n

equation: n = 10*a + b

equation: a + b = 1/3 * n

equation: b = 5 + a

answer: 27

If 3/5 of the number is 40 lesser than the 40 % of the same number, what is the 35% of that number ?

unknown values: 35/100*x

equation: 3/5*x = 40/100*x - 40

answer: -70

The sum of three numbers is 100. Find the numbers if the second number is 10 more than twice the first, and the third number is ten less than the sum of the first and the second.

unknown values: x,y,z

equation: x + y + z = 100

equation: y = 10 + 2*x

equation: z = (x + y) - 10

answer: 15; 40; 45

The average (arithmetic mean) of t, u, v, w, and x is 120. If the average of t, u, v, and w is 80, what is the value of x?

unknown values: x

equation: (t + u + v + w + x) / 5 = 120

equation: (t + u + v + w) / 4 = 80

answer: x = 280 | 280