You have diving lessons every fith day and swimming lessons every third day today you have both lessons. in how many days will you have both lessons on the same day again

This will be the Least Common Multiple of 3 and 5.

LCM = 3*5 = 15

- in 15 days.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,