self Maths Puzzle

Three people picked 65 apples altogether. At the first tree they each picked the same number of apples. At the second tree they each picked 3 times as many as they picked at the first tree. When they finished at the third tree, the group had 5 times as many apples as they had when they started at that tree. At the fourth tree the group picked just 5 apples. How many apples did each person pick at the first tree?

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self Other Question

A jar contains 3 coins. 2 are heads and tails. 1 is heads and heads.
You pick out at coin and toss it 3 times. You get three heads.
Question ; What is the probability of getting a head on the fourth toss ?
if i go to moon my weight will be 12kgs if i go to planet mars my weight will be 23kgs if i go to planet jupiter my weight will be 189.982kgs now what is the weight ofthe person