Jane and Susan have some marbles. Their share of marbles are in
the ratio of 5 : 7. They give away 117 marbles each. Their new
share of marbles are in the ratio of 1 : 4. How many marbles does
Susan have at first ?
Jane l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l
Susan l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l__l
Green = Marbles left
Purple = Marbles given
away
Hence, amount of marbles given
away by each person = 13 units
= > 13 units = 117
1 unit
= 9
Amount of marbles Susan has at first
= 21 units
= 21 X 9
= 189
marbles