As requested, let's call the number of books owned by Frank as .
If Frank were to double the number of books that he now owns, he would have books. In fact, doubling a certain number means to multiply it by 2.
This quantity (the double of books Frank has) is greater than the number of books Mary has, which is 250. So, the answer is
In case you need it, the solution is
Answer:
José has 49 used stamps
Step-by-step explanation:
7 used stamps for every 4 new stamps
To solve this type of problem, we can use a ratio
7 : 4 ratio
He has 28 new stamps
7 : 4 = x : 28
Ratios can be written as fractions
Cross multiply
4x = 7(28) = 196
Divide by 4 on both sides
x = 49
Hope this helps :)