He began with 10. Because if he bought 8 after selling half of his books and now his total is 13, then 13-8=5
so 5+5=10
Answer:
Tank B holds more
Tank A:
35*95 = 3,325 *30= 99,750
Tank B: 65*35= 2,275 *45= 102,375
If you want more just ask
The interest earned in 6 years would be:
$280 / 4 = $70
$70 * 6 = $420
