-3x+10y=-60 3x+5y=15
1 answer:
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Answer:
Person A made 108 cupcakes and person B made 60 cupcakes.
Step-by-step explanation:
Person A makes 1 cupcake in 5 minutes.
Say in x minutes A makes : cupcakes
Person B makes 1 cupcake in 9 minutes.
Say in x minutes B makes : cupcakes
Total cupcakes prepared by A and B in x minutes = 168
So, cupcakes made by A =
Cupcakes made by B =
Person A made 108 cupcakes and person B made 60 cupcakes.
Answer:
The mean length of the 13 people's big finger is 15.45 cm
Step-by-step explanation:
Given;
mean length of 4 childrens' big finger, x' = 14cm
mean length of 9 adults' big finger is 16.1cm, x'' = 16.1cm
Let the total length of the 4 childrens' big finger = t
Let the total length of the 9 adults' big finger = T
The total length of the 13 people's big finger = t + T
= 56 + 144.9
=200.9 cm
The mean length of these 13 people's big finger;
x''' = (200.9) / 13
x''' = 15.4539 cm
x''' = 15.45 cm (2 DP)
Therefore, the mean length of the 13 people's big finger is 15.45 cm