Answer and Explanation:
Suppose Waheeda needs x more dollars.
Right now, she has $15. She needs x more, so we add x to 15. The end result we hope to have is $75. So, the equation is:
x + 15 = 75
To solve, we simply subtract 15 from both sides: x = 75 - 15 = 60
Thus, she still needs $60.
Hope this helps!
