mrs chan baked some cupcakes. She gave 1/6 of the cupcakes to her neighbour and 7/10 of this remaining cupcakes to

Question

her sister. If she had 12 cupcakes left, how many cupcakes did she bake together?

Answer 1

n cupcskes

n/6 to neighbor , 5n/6 remain

(7/10)(5n/6) to sister or 7n/12 to sister

(3/10)(5n/6) remain or n/4 remain
so
n/4 =12
n =48