Question

exercitiile 1,2 va rogg

Answer 1

ex 2 il ai in poza din atasament
ex 1:
20%×x=240=>
20/100×x=240
x=240×100/20
x=1200

Answer 2

ex.1
20/100*a=240
2/10*a=240
a=240*10/2
a=1200

ex.2
a+20/100*a=243
a+20a/100=243
100a/100+20a/100=243
120a/100=243
120a=243*100
120a=24300
a=24300/120
a=2025/10
a=202,5