Question

Sally has a button collection. She gave away 30% of her collection. If she has a new total of 240 buttons, how many buttons did she give away?

Answer 1

Answer:

I think it's 102

let the old total be T

so T ×70/100= 240

( because she gAve 30% so left 70%)

70T= 2400

therefore T=340(approx)

now the buttons she gave away is 30% of 340 which is 102