Answer:
Question 1
<u>Given</u>
<u>Use formula and solve for x:</u>
- SP = CP + P
- 144 = x + (20% of x)
- 144 = x + 0.2x
- 144 = 1.2x
- x = 144/1.2
- x = 120
Cost price is N 120
Question 2
<u>Given</u>
- SP = 1000
- P = -20% (negative because of loss)
- CP = x
<u>Use formula and solve for x:</u>
- SP = CP + P
- 10000 = x - (20% of x)
- 10000 = x - 0.2x
- 10000 = 0.8x
- x = 10000/0.8
- x = 12500
Cost is N 12500
It can't be divided by 5 or 10 since when you count by 10's the numbers end in only zeros and when you count by 5 it is either 5 or 0 (5, 10, 15, 20 and so on).
9 will only work if the digits in the answer add up to 9. 18: 1+8=9
99: 9+9=18 and 1+8=9 So it can't be divided by 9 102: 1+0+2=3 (not 9)
That leaves 6 and six works - here's why.
There is a rule for 3's that says that the sum of the digit must add up to 3, 6 or 9.
Look:
3x1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12 and 1+2=3
3 x 5 = 15 and 1+ 5 = 6
3 x 6 = 18 and 1+ 8 = 9
3 x 7 = 21 and 2 +1 = 3 and so on - do you see the 3,6,9 pattern repeating.
Six follows the same rule except the number must be even. Look above to see that 6 works with 6, 12 and 18 but not the others.
So 102 is divisible by 3 (1+0+2 = 3) AND it is an even number - therefore it is divisible by 6. Here's proof: 6 x 15 = 90 and 102 is 12 more than 90 and six goes into that 12)
I hope that this will help you feel better. I don't want you to cry. :-)
Answer:
wh
Step-by-step explanation:
Answer: $36.68 or $35.97. Read below.
Step-by-step explanation: You need to multiply the 12 foot by 12 foot and you would get 144 sq feet. Then divide 47 into 144. You will be left with 3.06, and if you need to round, you can round that to 3. Then you need to multiply 3 by $11.99 and you will be left with the cost for the paint, which is $35.97 if you do round to a three, and $36.68 if you do not round the three. So your answer is either $36.68 or $35.97 depending on whether you round or not.
Let's find the value of given expression for x = 5 ~
now, plug in the value of x as 5
so, the equivalent value is 60
