Diane is making cookies. Of the first 260 she made, 75% had sprinkles on top. After she made 40 more cookies, the overall percentage of cookies with sprinkles rose to 78%. The number of the extra 40 cookies that had sprinkles is

Question

This is a revised question. Reiny answered some of the question as a part of my question was unclear. Please help with the other part. Thanks

Answer 1

.75*260 = 195 with sprinkles
.78*(260+40) = 234 sprinkles with the new batch
so, 39 of the 40 had sprinkles

Answer 2

9 + 10 = 21
final answers for any math question is always 21

Answer 3

Do not cheat Josh Grade 8 is a important year! DON'T CHEAT ON YOUR JET SET 1!!!