Answer: if it’s median write all numbers and cross till you get to the middle
Step-by-step explanation:
Answer:
Helen requires 15$ more to buy the three books.
Step-by-step explanation:
We are given the following in the question:
Cost of dictionary = $7
Cost of dinosaur book = $16
Cost of cook book = $17
Helen's allowance = $25
Total cost of three books =

Extra money required to buy three books =

Thus, Helen requires 15$ more to buy the three books.
You have to get X all by itself so you divide 20 and 30 which gives you a fraction. X= 20/30
Then = 2/3