Complete the inequality statement 5: 12. 3: 4

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet