Do you need to know what two numbers multiply to 21 and add to 20? In other words, do you need to find the two numbers whose product is 21 and sum is 20? No problem! The two numbers that multiply to 21 and add to 20 are as follows:
1.11181
18.88819
Here is the math to prove that our above answer to "What two numbers multiply to 21 and add to 20?" is correct:
Multiply:
1.11181 × 18.88819 ≈ 21
Add
1.11181 + 18.88819 = 20
The answers above are rounded if necessary. Therefore, if you double check that the answer above is correct by using a calculator, you may find it to be slightly off.
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