I dont know if this is right but here u goo
U do 5 times 30 and get 150 then take 15 times 50 and get 750 last take 750 plus 150 and u get 900 cm
Hi There!
Given:
- A placemat requires 30 feet of ribbon
- Mandy has 200 feet of ribbon
To Find:
How many placemats can Mandy make, if she has 200 ft of ribbon?
Solve:
200÷30≈7
Thus, she can make 7 placemats.
<h3>Hope it helps & enjoy your day!</h3>

Step-by-step explanation:
a) 
b) 
c) 
Force = mass x exceleration
1100 x 0.5 = 550