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jphelps19992019
17.12.2019 •
Mathematics
Rover weighs 5 pounds more than the neighbor’s dog. rover is 7 years old, and the neighbor’s dog is 9 years old. together they weigh 75 pounds. how much dose rover weigh
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Ответ:
Weight of Rover is 40 pounds
Solution:Let "r" be the weight of Rover
Let "n" be the weight of nieghbour dog
Given that Rover weighs 5 pounds more than the neighbor’s dog
From this information, we can frame a equation as:
Weight of Rover = 5 + weight of Neighbour dog
r = 5 + n eqn 1
Also given that together they weigh 75 pounds
From this information, we can frame a equation as:
Weight of Rover + weight of Neighbour dog = 75
r + n = 75 eqn 2
Let us solve eqn 1 and eqn 2 to find the values of "r" and "n"
Substitute eqn 1 in eqn 2
5 + n + n = 75
5 + 2n = 75
2n = 70
n = 35Substitute n = 35 in eqn 1
r = 5 + n = 5 + 35 = 40
r = 40Thus the weight of Rover is 40 pounds
Ответ:
64---54
96---81
128---108
160---135
192---162
224---189
and so on until
b.864