Answer:
the speed of the plane was 210 mph.
Step-by-step explanation:
The answer is going to be 250
Answer: c.50 is the answer
Answer:
Yes
Step-by-step explanation:
The order of the factors does not alter the product
Answer: $0.3
Step-by-step explanation:
Given
The owner buys 144 pens for $28.80 i.e. each pen costs

owner sells the pen at $0.4 i.e. price marked up by

So, the claim of the owner is incorrect
The actual increase in the price to get 50% markup
