Step-by-step explanation:
20 kg at N5.00 each = N100.00
10 kg at N3.00 each = N30.00
5 kg at N2.00 each = N10.00
5 kg at 50k each = N2.50
Total = N 142.50.
(b) Selling price = N142.50
Cost price = N120.00
∴ Profit = N(142.50 - 120.00) = N22.50.
Answer:
-9/8m+3/10
Step-by-step explanation:
7/8m + 9/10 -2m- 3/5
Combine like terms.
7/8m -2m +9/10-3/5
-9/8m+3/10
Write and solve an equation of ratios:
18.5 oz 524 gr
---------- = -----------
10 oz x
Then 18.5x = 5240, and x = 5240 gr / 18.5 = 283.2 grams (answer)
I'll take a stab at what I think is the most interesting problem in the attachment.
Substitute
and
, so that
and
. Then the ODE becomes
We would like to have this be a homogeneous equation, which is to say, given
there is some
for which
. In order for this to be true, we require that the constant terms in the numerator and denominator vanish. That is,
which is easy to solve; you'd find that
and
. Now, the ODE is
Substitute
, so that
, and the ODE is
which is separable. You have
and integrating both sides is easy. Substituting
, so that
, you have
The multiplier would be 1.03 because 1 is a whole and you are increasing by 3 therefore the answer would be 1.03
If you were decreasing an amount then you would take that amount away from 100. Eg - decrease an amount by 50%. What multiplier would you use? The answer to this would be 0.50 because you are taking away 50 from 100.
Hope this helps :)