If she can make 15 per hour that would mean that each hour she is making 15 cans.
She has 6 hours that means that she will make 90 products.
How To Do The Math: 15×6=90
Since we are finding out how many pins she need and not haw many products we will have to check how many pins she will need per product.
She needs 3 pins per product.
Since she will be making 90 products all we have to do is multiply 90 by 3 which will equal 270.
How To Do The Math:90×3=270
Your Answer will be 270 Pins.