1.Jane bought x tarts,she ate 1/4 of them,then her brother and sister ate 7 tarts.If 2 tarts were left,find the value of x.
2.The amount of money Joyce had was 3 times of Michael's.Joyce spent $30 first and then bought 6 pens which cost $3 each,she had $12 left.Find the amount of money Michael had.