I have 2 questions pls answer me quickly, I need to due it Later

1) At the start of a birthday party , a room is quarter full of people . When another 90 people came in, it became half full. How many people can fully fit in the room ?

2) In an aquarium , 80% of the fishes are guppies and the rest are goldfish. If there are 4 goldfish, how many guppies are there ?​

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.