20. the traffic lights at three different road crossings change after every 48 sec, 72
sec and 108 sec respectively. if they all change simultaneously at 8: 20: 00 hrs,
when will they again change simultaneously ?

21. a merchant has 120 ltrs of and 180 ltrs of two kinds of oil. he wants the sell oil
by filling the two kinds of oil in tins of equal volumes. what is the greatest of such a
tin.

pls answer i have math exam tmrw
ill give 13 points
pls pls pls pls pls pls

6 and 24

step-by-step explanation:

6 x 4 = 24

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

in english this is

ex.15 pag.85 create. write in ten lines the continuation of the ballad of the five motanasi, using verbs to the imperfect and to the perfect compound. five stars

hope i with whatever it is that you need! : )

i belive the biggest ratio would be 18: correct me if im wrong