The error is that he probably forgot the decimal point thus causing him to say '"hundred" instead of "and" for the decimal point.
200-50= 150
So you need to get 150 dollars in a month. If you get 20 dollars a week, then 150/20 will give you 7.5. So it will take you 7.5 weeks to get 150 dollars
B..............
c>=3 and n<0 and p<=(9-3 c)/n
Answer is $506.25.
first month is $100,
second month is 100 times 1.5 which is 150.
thirst month is 150 times 1.5 which is 225.
fourth month is 225 times 1.5 which is 337.5
fifth month is 337.5 times 1.5 which is 506.25
One equivalent fraction for 4/21 could be 8/42.
