O artur e a ivone sao primos e visitam amiude os seus avos, o artur visita-os a cada 8 dias e a ivone a cada 10 dias. Tendo em conta ambos visitaram os seus avos no natal, quando e que eles voltaram a encontrar-se na casa dos avos? Quanta visitas terao efectuado cada um?

Can someone me with this? i’m not sure what to put for my equations.

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities