Answer:
12
Step-by-step explanation:
20*2= 40 cookies per hour,
she is working 6 hours so she sells 240 cookies total
240-(38*6) = 12
Nadya bakes 20 cookies every half hour. Vasil sells 38 cookies per hour. 12 cookies that are left unsold and if they work from 6:00 am till noon.
The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
Nadya bakes 20 cookies every half hour. Vasil sells 38 cookies per hour.
We need to find many cookies that are left unsold and if they work from 6:00 am till noon.
20 x 2= 40 cookies per hour,
she is working 6 hours so she sells 240 cookies
The total
= 240 - (38 x 6)
= 12
Learn more about the unitary method;
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