Answer:
1.5kg
Step-by-step explanation:
The mean for the packages on day 1 will be:
= (1 + 8 + 1 + 12 + 1 + 11 + 7 + 6)/8
= 47/8
= 5.875
The mean for day 2 will be:
= (47 + 12)/8
= 59/8
= 7.375
The increase in mean:
= 7.375 - 5.875
= 1.5
a)
135
/ \
3. 45
3. 15
3. 5
b)
250
10 .25
/\ / \
2 5. 5 5
c)
351
3. 117
3. 39
3. 13
Hope it helps :)