B2. Planet Jupiter orbits the Sun in 12 years, and planet Saturn in 30 years. In 1941, both were on the same side of the Sun and were seen together from Earth. In which year did we last see them together? In which year will the event happen again for the first time? Write down the answers.
B2. Since the least common multiple of the numbers 12 and 30 is 60, we see Jupiter and Saturn on the same side of the Sun every 60 years. The last time this happened was in the year $1941+60=2001$, and it will happen again for the first time in the year $2001+60=2061$.

![](https://cdn.mathpix.com/cropped/2024_06_07_ce887fced8b2a2bf0894g-10.jpg?height=57&width=1639&top_left_y=2379&top_left_x=274)

![](https://cdn.mathpix.com/cropped/2024_06_07_ce887fced8b2a2bf0894g-10.jpg?height=55&width=1628&top_left_y=2434&top_left_x=277)

![](https://cdn.mathpix.com/cropped/2024_06_07_ce887fced8b2a2bf0894g-10.jpg?height=52&width=1639&top_left_y=2484&top_left_x=274)

![](https://cdn.mathpix.com/cropped/2024_06_07_ce887fced8b2a2bf0894g-10.jpg?height=49&width=1639&top_left_y=2534&top_left_x=274)

Written answers ...............................................................................................