The number that goes into both 28 and 30 is 2. This is because both 28 and 30 are even numbers, and 2 is the only common factor they share. Additionally, both 28 and 30 can be divided evenly by 2, resulting in whole numbers.
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The HCF of both numbers is 6
When 40 is decreased by 30% the result is 28.
What number must be added to to make it equal to 190312
30
3