Can you take a pic of the problem?
Answer:
Step-by-step explanation:
estimation: 84-73
11
Answer:
The two numbers are 6 and 12.
Step-by-step explanation:
So, let's start off, with x+y = 18 and x-y = 6.
Algebraically, we can add the above two equation sets, and we find out that 2x = 24, so x = 12. And then, it says the other number must be 6.
You start with a number that when added to the second number you will get 18 and when you subtract the second number from the first you will get 6. The difference between the above two results is 12.
So that difference of 12 is twice the second number; that means the second number is 6. And then using either of the given pieces of information, you can find that the first number is 12.
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In conclusion:
6 + 12 = 18
12 - 18 = 6
Answer:
The speed of the bus is 40mph.
Step-by-step explanation:
Given that increase in 20% causes the bus to drive at 48mph. In order to find the original speed, we can assume that the original speed is 100% :
100% + 20% = 48mph
120 % = 48mph
1% = 0.4mph
100% = 40mph