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Martina is comparing offers from two banks on checking accounts that Include debit cards. Bank A charges a 20 monthly fee for a checking account and debit card, plus 0.70 for each transaction. Bank B charges a 40 monthly fee for a checking account and debit card with unlimited transactions. Suppose Martina makes 30 transactions in a given month. Answer the questions below. (a) How much would she pay at each bank for the given month? Bank A: square Bank B: square (b) For the given month, which bank is cheaper and by how much? Bank A Bank A is Ssquare cheaper than Bank B. Bank B Bank B is Ssquare cheaper than Bank A.

Problemas

Martina is comparing offers from two banks on checking accounts that Include debit cards.
Bank A charges a 20 monthly fee for a checking account and debit card, plus 0.70 for each transaction. Bank B charges a 40 monthly fee for a checking
account and debit card with unlimited transactions.
Suppose Martina makes 30 transactions in a given month. Answer the questions below.
(a) How much would she pay at each bank for the given month?
Bank A: square 
Bank B: square 
(b) For the given month, which bank is cheaper and by how much?
Bank A
Bank A is Ssquare  cheaper than Bank B.
Bank B
Bank B is Ssquare  cheaper than Bank A.

Martina is comparing offers from two banks on checking accounts that Include debit cards. Bank A charges a 20 monthly fee for a checking account and debit card, plus 0.70 for each transaction. Bank B charges a 40 monthly fee for a checking account and debit card with unlimited transactions. Suppose Martina makes 30 transactions in a given month. Answer the questions below. (a) How much would she pay at each bank for the given month? Bank A: square Bank B: square (b) For the given month, which bank is cheaper and by how much? Bank A Bank A is Ssquare cheaper than Bank B. Bank B Bank B is Ssquare cheaper than Bank A.

Solución

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Patriciaprofessionell · Tutor durante 6 años
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(a) Para calcular cuánto pagaría Martina en cada banco por el mes dado, primero necesitamos calcular el costo total en cada banco.<br /><br />En el caso del Banco A, el costo mensual es de $20 y se cobra $0.70 por cada transacción. Dado que Martina realiza 30 transacciones en un mes, el costo total sería:<br /><br />\[ \text{Costo total en Banco A} = \$20 + (\$0.70 \times 30) = \$20 + \$21 = \$41 \]<br /><br />En el caso del Banco B, el costo mensual es de $40 con transacciones ilimitadas. Dado que Martina realiza 30 transacciones en un mes, el costo total sería simplemente:<br /><br />\[ \text{Costo total en Banco B} = \$40 \]<br /><br />Por lo tanto, Martina pagaría:<br /><br />Banco A: \$41<br />Banco B: \$40<br /><br />(b) Para determinar cuál banco es más económico y cuánto lo es, simplemente debemos comparar los costos totales calculados en la parte (a).<br /><br />En este caso, el Banco B es más económico que el Banco A. La diferencia en el costo es de:<br /><br />\[ \text{Diferencia} = \$41 - \$40 = \$1 \]<br /><br />Por lo tanto, el Banco B es \$1 más económico que el Banco A.
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