a baker had 400 buns. he sold 3/5 of them in the morning and 3/10 of them in the afternoon. how many buns had he left?

Di pagi hari terjual 3/5
= 3/5 x 400
= 240

Di sore hari terjual 3/10
= 3/10 x 400
= 120

Maka sisanya adalah
= 400 - (240+120)
= 400 - 360
= 40
Semoga jawaban cukup membantu .. boleh dong minta bintangnya ? :) 

= 400- 3/5 - 3/10
=400 - 240 - 120
=40