Yen bought 28 persimmons and 13 lemons on Saturday. Each day, she ate 4 persimmons and 1 lemon. She started eating her fruits on Sunday.

1. At the end of which day would there be an equal number of persimmons and lemons left? Give your answer in the following format. (Eg Monday)
2. How many more lemons than persimmons were there on Friday?

	Persimmons	Lemons
Before	28	13
Change	- 4 u	- 1 u
After	28 - 4 u	13 - 1 u

(a)
Let the number of days be 1 u.

The number of lemons and persimmons in the end is equal.

28 - 4 u = 13 - 1 u
4 u - 1 u = 28 - 13
3 u = 15

1 u = 15 ÷ 3 = 5

Yen ate for 5 days from Sunday onwards.  At the end of Thursday, there would be an equal number of persimmons and lemons left.

(b)
Number of days from Sunday to Friday = 6

Number of persimmons left on Friday
= 28 - (4 x 6)
= 28 - 24
= 4

Number of lemons left on Friday
= 13 - (1 x 6)
= 13 - 6
= 7

Number of lemons more than persimmons
= 7 - 4
= 3

Answer(s): (a) Thursday; (b) 3