- 00:00
- What is 35% of 90?
- 00:02
- Start by making 35% a fraction.
- 00:06
- 35/100 and simplified to 7/20.
- 00:11
- Now you can just multiply 7/20 x 90.
- 00:17
- 7/20 x 90/1 = 630/20 and simplify that to 31.5 by dividing 20 into 630.
- 00:26
- So we end up with 35% of 90 is equal to 31.5.
- 00:36
- Now let's find the unknown value.
- 00:38
- 35% of what number equals 31.5?
- 00:48
- Make 35% a fraction of 35/100 and simplified to 7/20.
- 00:55
- That gives us 7/20 - X = 31.5 with X as the unknown value.
- 01:05
- Get X alone by dividing both sides by 7/20 to get X = 31.5 / (7/20)
- 01:09
- Flip and multiply. X = 31.5/1 x 20/7
- 01:15
- That gives X = 90. So 35% of 90 equals 31.5!