Final answer:
To find 28×her number, multiply 14×her number by 2 since 28 is twice as big as 14. Therefore, 28×her number equals 2884.
Step-by-step explanation:
To find the value of 28×her number, we can use the information given in the question. We know that 14×her number = 1442. So, to find 28×her number, we can multiply both sides of the equation by 2, since 28 is twice as big as 14. This gives us:
2 × (14 × her number) = 2 × 1442
Simplifying, we get:
28 × her number = 2884
Therefore, 28×her number = 2884.