Question

If Camille rolls out and lays the colored marshmallow fondants over the buttercream coat. She can place $25$ fondants in $1\frac{1}{3}$ hrs, how long does it take her to place one fondant?

• A. $3$ mins and $5$ secs
• B. $3$ mins and $8$ secs
• C. $3$ mins and $10$ secs
• D. $3$ mins and $12$ secs

Answer 1

The correct option is D $3$ mins and $12$ secs

Time taken to put fondants on $25$ cakes = $1\frac{1}{3}$ hrs = $1$ hr + $\frac{1}{3}$ hr

= $60$ mins + $\frac{1}{3}\times 60$ mins

(As $1$ hr = $60$ mins)

= $60$ mins + $20$ mins = $80$ mins

$\therefore$ Time taken to put fondants on one cake

$=\frac{\text{Time taken to place fondants on}25\text{cakes}}{25}$

$=\frac{80}{25}=\frac{16\times 5}{5\times 5}=\frac{16}{5}=3\frac{1}{5}$ mins

= $3$ mins + $\frac{1}{5}$ mins

= $3$ mins + $\frac{1}{5}\times 60$ secs

= $3$ mins + $12$ secs

= $3$ mins and $12$ secs

Therefore, Camille takes $3$ mins and $12$ secs to put fondants on one cake.

(d) is the correct option.