1728 is the answer. (1/12)^-3
9/r= 3/10
Cross multiply:
3*r= 9*10
⇒ r= 9*10/3
⇒ r= 30
The final answer is 30~
Here the concept is that we use’l’ to represent the numbers but for number 5 we use 4’l’and we use 1 ’/‘ to represent the number 5 For example:
Answer:
The number of short sleeve sold was 76
Step-by-step explanation:
Let
x ----> the number of short sleeve sold
y ----> the number of long sleeve sold
we know that

-----> equation A
-----> equation B
substitute equation A in equation B

solve for y

Find the value of x

therefore
The number of short sleeve sold was 76