jane whispered a number to dauris. he took the number and subtracted 4, multipiled by 5, and added 7, and divided by 4 to give an answer of 8. what number did jane whisper to daruis?

Answer 1

Whenever working on a word problem like this, start from the last part and work backwards. Whatever operation you are given, do the opposite.

Adding and subtraction are opposites

Multiplying and dividing are opposites

8 x 4 = 32

32-7 = 25

25/5 = 5

5 + 4 = 9

So the number she whispered is 9!

Answer 2

Best way to solve this is starting backwards and doing opposite function. 8x4 = 32 -7 = 25/5 = 5 +4 = 9

Answer 3

When you are given questions like this, work the problem backwards. Remember that subtraction is opposite addition and multiplication is opposite division.

Start with the answer of 8. The last step before the answer of 8 was divide by 4, so you want to multiply by 4 (do the opposite). Now you have 32. Step before that was add 7, so you subtract 7. Now you have 25. Step before that was multiply by 5, so you divide by 5. Now you have 5. Step before that was subtract 4, so you add 4. Now you have 9. That is the original number!

Test it through with the original wording of the problem to make sure it works:

9-4 = 5

5x5=25

25+7 =32

32/4 =8