Mary baked 132 wafers and scones. She burnt 2 pieces and counted the remaining pieces. ¹₃ of the scones and ⁴₅ of the wafers were chocolate chip flavoured. There were equal number of scones and wafers that were cranberry flavoured.

1. How many unburnt cranberry wafers were there?
2. What fraction of the unburnt pastries were chocolate chip wafers?

(a)
Number of pastries that was not burnt
= 132 - 2
= 130

Fraction of the scones that was cranberry flavoured
= 1 - ¹₃ 
= ²₃ 

Fraction of the wafers that was cranberry flavoured
= 1 - ⁴₅ 
= ¹₅ 

The number of cranberry scones and cranberry wafers was the same. Make the numerators the same. 
23 Scones = 1x25x2 Wafers 
23 Scones = 210 Wafers 

Number of unburnt scones = 3 u
Number of unburnt wafers = 10 u

Total number of unburnt pastries
= 3 u + 10 u
= 13 u

13 u = 130

1 u = 130 ÷ 13 = 10

Number of unburnt cranberry wafers
= 2 u
= 2 x 10
= 20

(b)
Number of unburnt chocolate chip wafers
= 10 u - 2 u
= 8 u

^{Unburnt chocolate chip wafers}_{Total unburnt pastries}
= ⁸_{3 + 10}
= ⁸₁₃

Answer(s): (a) 20; (b) ⁸₁₃