OK, so this is assuming we are considering that the first three kids to solve ARE NOT in the first day.
So we have 3 kids and it doubles
Day 1 : 6
Day 2 : 12
Day 3 : 24
Day 4 : 48
Day 5 : 96
Day 6 : 192
Day 7: 384
So it should take 7 days or a week to solve all the problems.
The equation:
(3 * 2)^x = 384
2
8 - Or As a decimal it's 8.4
5
...........................
Answer: 60
Step-by-step explanation:
Cost of a plastic cup = 80.00
Cost of 6 plastic cups = 80 * 6 = 480
Purchase price = 420
Discount = 480 - 420 = 60