Problem 2
Rewrite the fraction 2/3 into 4/6. This is valid because we multiply top and bottom by 2.
2/3 = 4/6
Now compare the fractions for Wednesday and Tuesday in that order. We have 4/6 and 5/6. We can ignore the denominators because they effectively cancel out. The numerators will form the answer.
Answer is the ratio 4:5
=====================================================
Problem 6
7% = 7/100 = 0.07
7% of 12,500 = 0.07*12500 = 875
Answer: 875 dollars