2 answers:
Here's the work:
1. (6 x 5) + (14 x 8) = 142
142/20 = 7.1
2. (8 x 6) + (12 x 9) = 156
156/20 = 7.8
3. (86 x .8) + (93 x .2) = 87.4
4. (0.1 x 0.85) + (0.4 x 0.7) + (0.5 x 0.75) = 74%
5. (8 x 0.5) + (5 x 0.2) + (8 x 0.3) = 7.4
Sorry this took so long!
#1 7.1 years old
#2 7.8 years old
#3 87.4
#4 74
#5 7.4
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