48 minus 18=30 percent is the increase in the number of apps on Tan's phone
There are 14 erasers in the jar all together, and 10 of them are not pink.
The probability of picking a not-pink one is
10/14 or 5/7 or 0.0.7143... or 71.43% .
1/4 * -8= -8/4=-2
Basically act as if -8 has a denominator of 1 and just multiply across.
- Hope this helps :)
