Lets answer this:-
1st lets divide to see how many times 28 goes in 8. And then we will multiply....
28 ÷ 8 = 3.5
Now lets multiply to see how many symphonies are equal to 25 concerts. Lets do it:-
3.5 × 6 = 21
So, 21 symphonies are equal to 28 concerts.
Lets divide to see how many concerts are equal to 42 symphonies and the multiply to get our final answer.
42 ÷ 6 = 7
7 × 8 = 56.
So, 56 concerts are equal to 42 symphonies.
Hope I helped ya!!
Answer:

Step-by-step explanation:
we know that
To find out the percent of robots which are defective, divided the number of defective robots by the total number of robots and multiply the result by 100
Let
x ----> the number of defective robots
y ----> the total number of robots
p ---> percentage of robots which are defective
so

we have

substitute


Marie has a small copy of Rene margrittes famous painting. The Schoolmasters. Her copy has dimensions of 2 inches by 1.5 inches. The scale of her copy is 1 inch:40 cm What is the dimensions of the original painting?
Every 1 inch on her copy is the same as 40 cm on the original.
You just have to multiply by 40 and convert to centimetres.
2 x 40 = 80
1.5 x 40 = 60
So the original painting is:
80cm by 60cm