Yes, it is proportional. Every book is $4. 3 x 4 is 12, 7 x 4 is 28.
Answer:
(10, 3)
Step-by-step explanation:
Answer:
Step-by-step explanation:
original price is x
Then the decreased price will be ' x - x/6'
= 5x/6
5x/6= 75
x= (75×6)/5
x= 90
original price = £90