The computer cost is $3000
Step-by-step explanation:
The given is:
- The ratio of the price of a tv to the price of a computer is 13 : 15
- The tv 400 dollars cheaper than the computer
We need to find the cost of the computer
Assume that the price of the computer is $x
∵ The ratio between the prices of the tv and the computer is 13 : 15
∵ The price of the computer is $x
∵ The price of the tv 400 dollars cheaper than the computer
- That means the price of the tv is less than the price of the
computer by $400
∴ The price of the tv is $(x - 400)
By using the ratio method
→ tv : computer
→ 13 : 15
→ (x - 400) : x
By using the cross multiplication
∴ 15(x - 400) = 13(x)
- Simplify the left hand side
∴ 15x - 6000 = 13x
- Add 6000 to both sides
∴ 15x = 13x + 6000
- Subtract 13x from both sides
∴ 2x = 6000
- Divide both sides by 2
∴ x = 3000
The computer cost is $3000
Learn more:
You can learn more about the ratio in brainly.com/question/4847829
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To multiply 9x475 using expanded form and the distributive property, you will break 475 into three numbers, multiply each of them by 9, and add the products together:
475 = 400 + 70 + 5
400x9 = 3600
70x9 = 630
5x9 = 45
3600 + 630 + 45 = 4,275
Answer:
The value of x is -3.
Explanation:
Given the equation:
Step 1: Distribute 4 in the left-hand side.
Step 2: Collect like terms.
Step 3: Divide both sides by 3.
The value of x is -3.
Answer:
102.6666... feet in one second 1232 feet in twelve seconds.
Step-by-step explanation:
Most clear way of solving this breakdown the proportions by keep the value.
1 mile = 5280 feet.
1 hour = 60 minutes = 3600 seconds -- See now it is easy.
Feet per second...
= feet/seconds
(70*5280) = 369,600/3,600 = 102.666666667 -- That is 102.66...feet per second.
For twelve seconds just multiply by 12.
102.666666667*12 = 1232 feet in twelve seconds.
SOLUTION
Total number of balls is 1000
Red balls are 700
Number of blue balls will be
Hence the number of blue balls is 300.
So you simply subtract 700 from 1000 to get 300.
