The sum of two numbers is 7. If three times the square of the first number is added to twice the square of the second number, the sum is 59. Find the numbers. Two numbers are such that if the square of the first number is subtracted by twice their product, the difference is -1. But twice the product added to the sum of thrice the square of the first number and five times that number gives 10. Three men, Juan, Pedro and Jose worked together to complete a job in 13/12 days. If Juan and Pedro work together, it would take them 7/ 12 days, while if Pedro and Jose worked together it would take them 5/6 of a day. How long would it take each of them to do the work alone?