Respuesta :
3.5m is 500% of 70cm since 3.5m is 350cm(350=70×x, x=5 5×100=500)
And 70cm is 20% of 3.5m (70=350×x, x=1/5 1/5×100=20)
And 70cm is 20% of 3.5m (70=350×x, x=1/5 1/5×100=20)