Answer:
x/3 +x/2 = x-3
Step-by-step explanation:
One-third of the number is x/3.
One-half of the number is x/2.
Three less than the number is x-3.
The expression you want is ...
x/3 +x/2 = x-3
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The number is 18.
Answer: the cost of one chicken is $8
The cost of one duck is $5
Step-by-step explanation:
Let x represent the cost of one chicken.
Let y represent the cost of one duck.
Last month, he sold 50 chickens and 30 ducks for $550. It means that
50x + 30y = 550- - - - - - - - - - - 1
This month, he sold 44 chickens and 36 ducks for $532. It means that
44x + 36y = 532- - - - - - - - - - - 2
Multiplying equation 1 by 44 and equation 2 by 50, it becomes
2200x + 1320y = 24200
2200x + 1800y = 26600
Subtracting, it becomes
- 480y = - 2400
y = - 2400/- 480
y = 5
Substituting y = 5 Intl equation 1, it becomes
50x + 30 × 5 = 550
50x + 150 = 550
50x = 550 - 150
50x = 400
x = 400/50
x = 8
What does that 3/x and 2/x mean? 2x and 3x or x^2 and x^3?
Answer:
15.6
Step-by-step explanation:
40% × 39 = 15.6
Hope this helps