In a stadium, there are 700 seats. 178 of them are first-class seats. How many ordinary seats must be converted into first-class seats, so that the proportion of first-class seats will be $\frac{3}{10}$?
A
30
B
31
C
32
D
33
E
None of the above
Sorry. Please check the correct answer below.
There are $\frac{2}{5}$ as many first class seats as ordinary seats. $\frac{3}{10}$ $\times$ $\frac{700}{1}$ = 210 210 – 178 = 32
There are $\frac{2}{5}$ as many first class seats as ordinary seats. $\frac{3}{10}$ $\times$ $\frac{700}{1}$ = 210 210 – 178 = 32
Elliot’s savings was $\frac{6}{7}$ of Jerry’s. Thereafter, Elliot saves \$18 and Jerry spends \$9. They then had the same amount of money. How much was Elliot’s savings at first?
Gina bought some storybooks. She sold 16 more than $\frac{3}{5}$ of her storybooks on Monday. She then sold 2 less than $\frac{1}{4}$ of her remaining storybooks on Tuesday. How many more books did she sell on Monday than on Tuesday if she was left with 38 books?
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