Question

Jaden takes 80 minutes to complete a set of LEGO.

Lucas will take 100 minutes to complete the same set of LEGO.

Jaden and Lucas worked together to fix the LEGO set for 30 minutes before Jaden got bored and left.

If Lucas continues to fix the remaining parts of the LEGO set himself at the same rate, calculate how long it will take for him to complete it.

Give your answer in minutes and seconds, correct to the nearest second.

Solution