Lehana and marty each opened a savings account with a deposit of $100. lehana earned 2.5% simple interest per year. marty earned 2% simple interest per year. neither of them made additional deposits or withdrawals. how much more did lehana receive in interest than marty after three years?

$1.5

Step-by-step explanation:

Given : Lehana and Marty each opened a savings account with a deposit of $100

Thus, Principal amount is same for both P= $100

Time t=3 years

Rate  of interest for Lehana

Rate  of interest for Marty

Difference between the simple interest = S. I. for Lehana-  S.I. for Marty

Hence, Lehana receive $1.5 more in interset than Marty after 3 years.

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step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.