in short, we simply split the total amount by the given ratio, so we'll split or divide 1020 by (15 + 2) and then distribute accordingly.

9 / 10 = Total Price: 1.90
2 = Total Price: 3.00
3 1 / 10 = Total Price: 4.10
10 = Total Price: 11.00
-67-3=10r
-70=10r
r= -70/10
r =-7
Divide the total amount of keys produced by the amount of keys a piano requires to find the amount of pianos a factory made:

The factory made 6204 pianos in 12 months.
Because the question asks for the amount of pianos made for the first 3 months, we'll divide the total 12 months by the 3 months the question asks for:

Now we'll divide the total amount of pianos made in 12 months by this number to find the pianos made in 3 months:
1551 pianos were made in the first 3 months of production.
Answer:
A = 108 m^2
Step-by-step explanation:
The area of a trapezoid is found by
A = 1/2 (b1+b2)h where b1 and b2 are the lengths of the bases
A = 1/2(10+14) (9)
A = 1/2 (24)*9
A = 108 m^2