If `1.6 = y/1.5` , then find value of y

If x=6 and y=5, then find the values of the following

"If " (5)/(6) of 29% of y = 29, then find the value of y.

If 2x +3y = 30 and (x+y)/y = 11/8 , then find the value of 5y + 6x

If y = sin px and y_n is the nth derivative of y , then find the value of |(y, y1, y2), (y3, y4, y5), (y6, y7, y8)|

If (x)/(4) + ( y)/(3) = (5)/(12) and (x)/(2) + y = 1 then find the value of (x + y ) .