A recipe that yields two loaves of bread requires 2 1/2 cups of flour. Edgar has a bag that contains 18 3/4 cup of flour. How ma
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Answer:
Because we actually divide by 10 when a number is multiplied by 0.1.
Step-by-step explanation:
Let be a number.
When we multiply a number by 10:
(One '0' is increased in the number)
For example:
Considering a decimal number:
Multiplying a number with 0.1 (which is actually ) means dividing the number by 10.
Considering a decimal number:
<em>Therefore, When multiplying a number by 0.1, move the decimal to the left.</em>
If is a number that is both divisible by 4 and 5, then
4 and 5 are coprime, so we can use the Chinese remainder theorem to solve this system and find that is a solution to the system, where
is any integer. Simply put, any multiple of 20 fits the bill.
Now, there are 11 numbers between 100 and 300 that are divisible by 20 (100, 120, 140, and so on). We have when
, so the sum we want to compute is