There are 25% as many pink marbles as silver marbles in Winnie's collection of marbles. The number of grey marbles is 40% fewer than the number of silver marbles. There are 483 more grey marbles than pink marbles.

1. Find the total number of marbles in the collection.
2. What percentage are the number of silver marbles as compared to the number of grey marbles? Leave your answer as a mixed number in its simplest form.

Pink	Silver	Grey
1x5	4x5
	5x4	3x4
5 u	20 u	12 u

(a)
25% = ²⁵₁₀₀ = ¹₄

100% - 40% = 60%
60% = ⁶⁰₁₀₀ = ³₅

The number of silver marbles is the repeated identity. Make the number of silver marbles the same.  LCM of 4 and 5 is 20.

Number of more grey marbles than pink marbles
= 12 u - 5 u
= 7 u

7 u = 483

1 u = 483 ÷ 7 = 69

Total number of marbles in the collection
= 5 u + 20 u + 12 u 
= 37 u
= 37 x 69
= 2553

(b)
Percentage of the number of silver marbles as compared to the number of grey marbles
= ⁵₃ x 100%
= ⁵⁰⁰₃ %
= 166²₃ %

Answer(s): (a) 2553; (b) 166²₃ %