Suppose a household with 4 people uses 180 litres of water per day on average. 60% of this is hot water. how much water is used?

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the second option

step-by-step explanation:

2+2 obliviously is 4.

m∠abd = m∠dbc

step-by-step explanation:

given : ab bisects ∠dbc

as we know that bisection means ab divides   ∠dbc   in two equal angles named as   ∠dba and   ∠abc

so, m∠abd = m∠dbc  

because ab bisects ∠dbc.

hence , the first statement m∠abd = m∠dbc is true.