Gabby bought 19 persimmons and 10 mangoes on Thursday. Each day, she ate 4 persimmons and 1 mango. She started eating her fruits on Friday.

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

	Persimmons	Mangoes
Before	19	10
Change	- 4 u	- 1 u
After	19 - 4 u	10 - 1 u

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

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

19 - 4 u = 10 - 1 u
4 u - 1 u = 19 - 10
3 u = 9

1 u = 9 ÷ 3 = 3

Gabby ate for 3 days from Friday onwards.  At the end of Sunday, there would be an equal number of persimmons and mangoes left.

(b)
Number of days from Friday to Monday = 4

Number of persimmons left on Monday
= 19 - (4 x 4)
= 19 - 16
= 3

Number of mangoes left on Monday
= 10 - (1 x 4)
= 10 - 4
= 6

Number of mangoes more than persimmons
= 6 - 3
= 3

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