Question

a and b represent the frequencies of the modal class and median class respectively of the date, the value of 3a+4bis
class 0-10 10 -20 20-30 30-40 40-50
frequency 12 14 10 17 7
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Answer 1

Answer:

3a+4b=91

Step-by-step explanation:

a=17

b=10

3a+4b=51+40

=91

Answer 2

sorry I don't know answer