KeerthanaPosted on (645 ÷ 5 + 240 ÷ 4) ÷ ? = 31.5 a 4 b 3 c 6 d 2 e 9 Answer : Option CExplanation : (645 ÷ 5 + 240 ÷ 4) ÷ ? = 31.5 ⇒(6455+2404)÷?=31.5 Rightarrow left( {frac{{645}}{5} + frac{{240}}{4}} ight) div ? = 31.5⇒(5645+4240)÷?=31.5 ⇒(129+60)÷?=31.5 Rightarrow left( {129 + 60} ight) div ? = 31.5⇒(129+60)÷?=31.5 ⇒189?=31.5 Rightarrow frac{{189}}{?} = 31.5⇒?189=31.5 ⇒31.5×?=189 Rightarrow 31.5 imes ? = 189⇒31.5×?=189 ⇒ ?=18931.5=6 Rightarrow ;? = frac{{189}}{{31.5}} = 6⇒?=31.5189=6 Rate This:NaN / 5 - 1 votesAdd comment
