Răspuns :
1 + 4/100 = 100/100 + 4/100 = 104/100 = 26/25
sau
1 + 4/100 = 1 + 1/25 ( dupa simplificare ) = 25/25 + 1/25 = 26/25
Exercitiul tau:
136,8 = a x ( 1 - 4/100 ) x ( 1 - 5/100 )
136,8 = a x ( 1 - 1/25 ) x ( 1 - 1/20 )
136,8 = a x 24/25 x 19/20
( 4 ( am simplificat cu 4 )
136,8 = 456/500 a
136,8 = 114/125a
114/125 a = 136,8
a = 136,8 : 114/125
a = 136,8 x 125/114
a = 17100/114
a = 150
sau
1 + 4/100 = 1 + 1/25 ( dupa simplificare ) = 25/25 + 1/25 = 26/25
Exercitiul tau:
136,8 = a x ( 1 - 4/100 ) x ( 1 - 5/100 )
136,8 = a x ( 1 - 1/25 ) x ( 1 - 1/20 )
136,8 = a x 24/25 x 19/20
( 4 ( am simplificat cu 4 )
136,8 = 456/500 a
136,8 = 114/125a
114/125 a = 136,8
a = 136,8 : 114/125
a = 136,8 x 125/114
a = 17100/114
a = 150