Question

Hey guys plz answer this. Bcz I am in trouble ​

Answer 1

Answer:

sand the foll question ggfdfggcx vv vbbbbhhgc

Answer 2

Answer:

Step-by-step explanation:

x         f(n)           fx

5         7              35

15        a             15a

25       8             200

35       10            350

45        5            225

total(N) 30+a   Σfx810+15a

now

mean=Σfx/n

24=810+15a/30+a

720+24a=810+15a

24a-15a=810-720

9a=90

a=10

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