May be she might have had 250 grains of portion.
Answer:
4b^4
Step-by-step explanation:
Work backwards, multiply 4b^5 to 2b, get 8b^6, divide by 2b^2 and get 4b^4
5.25 = 70%. 5.25 divided by 7 is $0.75 which is 1/10 of the evening price. So multiply $0.75 by 10 to find the evening price.
Hope it helps :)