Question

Lola needs to sign 96 invitations. Using a stopwatch that measures time to tenths of a second, it takes Lola 5.3 seconds to sign her full name. Going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes Lola needs to sign all 96 invitations?

Answer 1

8.48 minutes.
96 x 5.3 = 508.8 / 60 = 8.48

Answer 2

`8.48\ minutes`

Explanation:

we know that

it takes Lola
`5.3` seconds to sign her full name

so by proportion

Find how many seconds take Lola to sign
`96` invitations

`(5.3)/(1)(seconds)/(invitation)=(x)/(96)(seconds)/(invitations) \\ \\ x=96*5.3\\ \\x= 508.8\ seconds`

Convert seconds to minutes

Remember that

`1\ minute=60\ seconds`

so

`508.8\ seconds=508.8/60=8.48\ minutes`