A bike store costs $2400 per month to operate. The store pays an average of $60 per bike. The average selling price of each bike is $120. How many bikes must the store sell each month to break even?

40 bikes

Step-by-step explanation:

x : no. of bikes sold to breakeven

Expenses = Revenue

2400 + 60x = 120x

2400 = 60x

x = 40

$15 each

step-by-step explanation:

$45/3 children= $15 each

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.