This is not possible, because if you had 11 coins, then not even 11 dimes will cover it, because 11*10 is 110, or $1.10
Step-by-step explanation:
Your question isn't complete.
But if you are asking for finding the value of variable then, you should follow these things
- Use BODMAS if necessary
- For cancelling a positive number you should subtract it from both sides
x+2=6
x+2-2=6-2
x=4
Hence, positive number is cancelled
- For cancelling negative numbers add it both sides
x-3=1
x-3+3=1+3
x=1
Hence, negative number is cancelled
- For cancelling a number in product form number divide both sides by same number
3x=6
3x/3=6/3
x=2
Hence, the number in product form is cancelled
- For cancelling the number in divide form, multiply both sides by the same number
y÷3=1
y÷3×3=1×3
y=3
Hence, the number in divide form is cancelled
Answer:
50 % alcohol solution = 10 millimetres
30 % alcohol solution = 90 millimetres
Step-by-step explanation:
two equations can be derived from this question
x + y = 100 equation 1
0.3x + 0.5y = 100 x 0.32 = 32
0.3x + 0.5y = 32 equation 2
where :
x = 30% alcohol solution
y = 50% alcohol solution
multiply equation 1 by 0.3
0.3x + 0.3y = 30 equation 3
subtract equation 3 from 2
0.2y = 2
y = 10
substitute for y in equation 1
x + 10 = 100
x = 100 - 10
x = 90
Answer:
Step-by-step explanation
$12x17.5=210
$11x12.5=137.5
210+137.5=$347.5
Elizabeth worked for 17.5 Hours
Her sister worked 12.5 hours