Level 2
In a conference, there were 651 females and 97 males. How many males must join in order for the number of males to be twice that of the number of females?
Level 3
Melanie, Oprah and Andy shared $4590 among themselves. Oprah and Andy shared 49 of the money equally. After Oprah gave away some of her money to Melanie, Andy had 3 times as much money as Oprah. How much money did Oprah give to Melanie?
Level 3
At a fruit stall, there were 13 as many pears as apples. After 18 apples were sold, the number of pears became 23 as many as the apples. How many fruits were at the fruit stall at first?
Level 3
In a basket, 15 are oranges and the rest are pears. If I give away 20 pears. There will be 23 as many pears as oranges. How many oranges and pears are there in the basket altogether?
Level 3
During a class gathering, 47 of the students were boys and the rest were girls. Halfway, 22 more girls joined in the gathering and there were 35 as many boys as girls. Find the number of students at the class gathering in the end.
