Twice the sum of two numbers is 1236. Twice the difference of those same two numbers is 680. What are those two numbers?

Twice the sum of two numbers is 1236. Twice the difference of those same two numbers is 680. What are those two numbers?

unknown values: x,y

equation: 2(x+y) = 1236

equation: 2(x-y) = 680

answer: {479; 139}

The sum of three consecutive numbers is 600. What is the least of these three numbers?

unknown values: x

equation: x+x+1+x+2=600

answer: 199

When the digits of a two-digit number are reversed, the new number is 9 more than the original number, and the sum of the digits of the original number is 11. What is the original number?

unknown values: n

equation: n = 10*a + b

equation: 10*b + a = 9 + n

equation: a + b = 11

answer: 56

The sum of two digits is 8. If the digits of the number are reversed, the number formed is 36 more than the number. What is the number?

unknown values: n

equation: n=10*x+y

equation: x+y=8

equation: 10*y+x=n+36

answer: 26

The sum of the digits of a 2-digit number is 11. If the digits are reversed, the number formed is 45 more than the original number. Find the original number.

unknown values: m

equation: m = 10*x + y

equation: x + y = 11

equation: 10*y + x = m + 45

answer: 38

the sum of the digits of a two digit number is 7. If the digits are reversed the number is increased by 37. What is the original number?

unknown values: n

equation: n = 10*a + b

equation: a + b = 7

equation: 10*b + a = n + 37

answer: ans_no_result

The sum of the digits of a two-digit number is 8. If the digits are reversed. the new number is 18 more than the original number. Find the original number.

unknown values: m

equation: m = 10*x + y

equation: x + y = 8

equation: 10*y + x = m + 18

answer: 35

The sum of the digits of a two-digit number is 12. The number formed by interchanging the digits is 54 more than the original number. What is the original number?

unknown values: m

equation: m = 10*x + y

equation: x + y = 12

equation: 10*y + x = m + 54

answer: 39

the ratio of the number of coins mark has to the number of coins john has is 2:5. if john has 20 coins, how many coins does mark have?

unknown values: x

equation: x/20=2/5

answer: 8

if 240:3=x:5 what's the value of x?

unknown values: x

equation: 240/3 = x/5

answer: 400