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?

3.3 minutes
3.3125 minutes
8.48 minutes
8.5 minutes

Answer 1

time taken to sign one invitation = 5.3 sec
time taken to sign 96 invitations = 5.3 × 96
= 508.8 secs
= 8.48 mins

Answer 2

Answer:

8.48 minutes

Step-by-step explanation:

Given,

Lola 5.3 seconds to sign her full name,

So, the time taken by her to sign in 96 invitation = 96 × Time taken by her in one signature

= 96 × 5.3

= 508.8 seconds,

Since, 1 minute = 60 seconds,

⇒ $1\text{ second}=\frac{1}{60}\text{ minutes}$

Hence, the time taken by her to sign in 96 invitation = $\frac{1}{60}\times 96$

$=\frac{96}{60}$

$=8.48\text{ minutes}$

Third option is correct.