Answer:

If all girls dig holes, 5* 10=50 lets 50/30=5/3 boys plant trees, 50/25=2 boys water trees 6-5/3-2=2 and1/3 = 7/31/20: 60.

7/111* *15 * 20 = 700/37 is approximately equal to 1850+ 18=68. hello