Question

7- Num cinema, há 12 fileiras com 16 poltronas e 15 fileiras com 18 poltronas.
O número total de poltronas é:
a) 192
b) 270
c) 462
d) 480

Resposta:C) 462​

Answer 1

Resposta:

c) 462

Explicação passo-a-passo:

12x16=192

15x18=270

192+270=462

Answer 2

$\large\boxed{\begin{array}{l}\sf fileiras~poltronas\\\sf 1\longrightarrow 16\\\sf 12\longrightarrow x\\\sf x=12\cdot16\\\sf x=192\, poltronas\end{array}}$

$\large\boxed{\begin{array}{l}\sf fileiras~poltronas\\\sf 1\longrightarrow18\\\sf 15\longrightarrow x\\\sf x=15\cdot18\\\sf x=270\, poltronas\end{array}}$

$\large\boxed{\begin{array}{l}\sf O\, n\acute{u}mero\, total\,de\, poltronas\,\acute{e}\\\sf x=192+270\\\sf x=462 \,poltronas\end{array}}$