Let cost of Emma's phone = x
Given that cost of Sophie's phone = 640
Then ratio of their phones cost will be x:640 or x/640
Given that ratio of their phones cost is 7:8 or 7/8
So both ratios will be equal.
x=560
So the new ratio of the cost of their phones will be 560:640
Now we have to find about how much should the prices of their phones decrease in order to have a ratio of 9:11.
So let that decreased amount is k then we will get equation :
11(560-k)=9(640-k)
6160-11k=5760-9k
6160-5760=11k-9k
400=2k
200=k
Hence final answer is prices of their phones should decrease by 200 in order to have a ratio of 9:11.
Answer:
5 pizza slices and 4 drinks
Step-by-step explanation:
If each pizza slice costs $4 then 4*5 is $20 and then if each drink costs $2 then 4*2 is $8 which adds up to $28
You use parenthesis first, then brackets. Braces are not always used. They can be used for function notation.
36259 + 12258 + 1988 = 50,505 per year
I do not know if ur question is asking how much she will pay for 1 yr, or for 4 years. But if it is for 4 yrs, it will be 4(50,505) = 202,020.