Răspuns :
278-8=270 270:3=90 mere sunt in a3a lada 30x3=90 mere sunt in prima lada 30x5+8=158 mere sunt in a2a lada
|-----|-----|-----| (prima lada⇒a) |-----|-----|-----|-----|-----|--| (a doua lada⇒b) |-----| (a treia lada⇒c) a+b+c=278 ,a=3×c , b÷c=5rest8⇒b=5c+8 1) cat reprezinta cele 9 segmente egale? 278-8=270 2) cat reprezinta o parte( adica ( c ) a treia lada? 270÷9=30 kg 3) cate kg se afla in prima lada( adica (a) ? 30×3=90 kg 4) cate kg sunt in a doua lada (adica (b) ? 30×5+8=150+8=158 kg Verificare: 30kg+158kg+90kg=278kg mere