Question

Section 1

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Calculator

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A box of blocks contains 35 red, 40 blue, and 50 green blocks. If the box only contains red, blue, and green blocks, and a child randomly

selects a block, what is the probability the block is red?

Answer 1

`P(Red) = (7)/(25)`

Explanation:

Given

`Red = 35`

`Blue = 40`

`Green = 50`

Required

Determine the probability of red

`P(Red) = (n(Red))/(Total)`

Substitute value for n(Red) and calculate Total

`P(Red) = (35)/(35 + 40 + 50)`

`P(Red) = (35)/(125)`

Divide numerator and denominator by 5

`P(Red) = (7)/(25)`