150 leaves -----100 %
177 leaves ----- x %
------------------------------
150 : 177 = 100 : x
x = ( 177 * 100 ) : 150
x = 118 %
118 5 - 100 % = 18%
Answer: Her collection increased by D ) 18 %
The first step is to change the mixed number into an improper fraction.
1 7/10 = 17/10
(17/10) / (3/5) =
(17/10) * (5/3) = (change the division to a multiplication by the reciprocal.
17/6 = 2 5/6
33 and 1/3 % is equivalent to 1/3
(1/3) of what number is 21
in math-ese:
(1/3) * x = 21
multiplying both sides by 3...
x = 63
I think it is 55, 50 hn so or 65