A small knife is twice the amount of the utensils that costs $10.00 so the knife costs 2*10 = $<<2*10=20.00>>20.00
All total, each little kit will costs $14.00 for mitts, $16.00 for an apron, $10.00 for utensils and $20.00 for a knife for a total of 14+16+10+20 = $<<14+16+10+20=60.00>>60.00
Each kit costs $60.00 and they are currently 25% off so that's a savings of 60*.25 = $<<60*.25=15.00>>15.00
The kits are $60.00 and they are $15.00 off so they now cost 60-15 = $<<60-15=45.00>>45.00
She needs to buy 3 kits and each kit costs $45.00 so that's 3*45 = $<<3*45=135.00>>135.00
#### 135