Question

10. In a certain hospital, the mean birth rate of a week was 35. If the mean birth rate from
Monday to Thursday was 32 and that of Thursday to Sunday was 36, find the number
of births on Thursday,
Answer is27

Answer 1

Answer:

27

Step-by-step explanation:

Mean birth of seven days =35

sum of birth of seven days =35×7=245

Mean of birth rate from Monday to Thursday= 32

( 4 days )

Sum of birth of first four days =32×4=128

Mean of birth rate from Thursday to Sunday= 36

( 4 days )

Sum of birth of last four days= 36×4=144

Total sum of birth of ( first four + last four =8days )

128+144= 272

Therefore, Number of birth on Thursday = 272-245=27