Question 12
a) In John’s stamp collection, the number of Malaysia stamps was 0.8 that of Singapore stamps. The number of Australia stamps was 0.5 that of Malaysia stamps. If he had 120 Singapore stamps, how many stamps did he have altogether?
b) Johnson spends 0.6 of his money on a pen and 0.15 of his money on a movie ticket. If he has $\$13$ left, how much money does he have at first?
c) A blouse cost $\$4.50$ more than a shirt. A skirt cost $\$15.20$ more than the blouse. Sandy bought 6 of each item. She paid $\$451.20$ for them. How much did she pay for a skirt?
**Editorial input note:** Enter the numerical answers to (a), (b), and (c), in order, separated by semicolons with no spaces. Use dollars for (b) and (c), with two digits after the decimal point for (c); omit currency symbols and unit labels.
b) Johnson spends 0.6 of his money on a pen and 0.15 of his money on a movie ticket. If he has $\$13$ left, how much money does he have at first?
c) A blouse cost $\$4.50$ more than a shirt. A skirt cost $\$15.20$ more than the blouse. Sandy bought 6 of each item. She paid $\$451.20$ for them. How much did she pay for a skirt?
**Editorial input note:** Enter the numerical answers to (a), (b), and (c), in order, separated by semicolons with no spaces. Use dollars for (b) and (c), with two digits after the decimal point for (c); omit currency symbols and unit labels.