Grade 6 mark application problem group 1 - conversion unit 1 Instead of equation, convert to unit "1" 1, a school planted three species of seedlings this year, of which Wutong tree accounted for 36% of the total, 18 more than pine trees, pine tree is the 3/5 of cedar (3/5), how many schools planted this year? 2. Amateur sports schools have bought three kinds of balls, of which basketball accounts for 13% of the total. The ratio of football to the other two balls is 1:4. There are 134 volleyball balls. How many are there in total

Grade 6 mark application problem group 1 - conversion unit 1 Instead of equation, convert to unit "1" 1, a school planted three species of seedlings this year, of which Wutong tree accounted for 36% of the total, 18 more than pine trees, pine tree is the 3/5 of cedar (3/5), how many schools planted this year? 2. Amateur sports schools have bought three kinds of balls, of which basketball accounts for 13% of the total. The ratio of football to the other two balls is 1:4. There are 134 volleyball balls. How many are there in total

1. Pine and Cunninghamia lanceolata accounted for 1-36% = 64% of the total,
Pine trees accounted for 64% * [(3 / 5) / (1 + 3 / 5)] = 24%,
Wutong tree is more than pine tree: 36%-24%=12%.
Therefore, the total number of plants planted in schools this year is: 18 / 12% = 150 (trees);
2. 1 / (1 + 4) = 20%,
The number of Volleyball in the total: 1-13% - 20% = 67%,
So there are three kinds of balls: 134 / 67% = 200