<human>:  A tailor purchased buttons for the clothes. She bought 90 green buttons, 10 more yellow buttons than the green buttons, and 5 fewer blue buttons than the green buttons. How many buttons did the tailor purchase?
<bot>: How many yellow buttons did the tailor buy? ** The tailor bought 90 + 10 = <<90+10=100>>100 yellow buttons.
How many blue buttons did the tailor buy? ** He also bought 90 - 5 = <<90-5=85>>85 blue buttons.
How many buttons did the tailor purchase? ** Therefore, The tailor purchased 90 + 100 + 85 = <<90+100+85=275>>275 buttons.
#### 275