Waec Model Questions Vol1 2021 Geography Question 30

Practice objective / multiple choice question 30 from the 2021 Waec Model Questions Vol1 Geography examination.

Waec Model Questions Vol1 2021 Geography Objective / Multiple Choice Medium Difficulty
Question 30 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • GEOGRAPHY • objective

A soil sample is to be classified by texture. Let S, Si and C denote the percentages of sand, silt and clay respectively. The following relationships hold: (i) sand is twice the amount of clay (S = 2C), (ii) silt is 20 % less than sand (Si = S - 0.20S), and (iii) the three components sum to 100 % (S + Si + C = 100). Determine the percentage of each component, rounded to one decimal place.

Answer Options

A. Sand ≈ 40.0 %, Silt ≈ 38.0 %, Clay ≈ 22.0 %
B. Sand ≈ 42.0 %, Silt ≈ 36.0 %, Clay ≈ 22.0 %
C. Sand ≈ 45.0 %, Silt ≈ 30.0 %, Clay ≈ 25.0 %
Correct Answer D. Sand ≈ 43.5 %, Silt ≈ 34.8 %, Clay ≈ 21.7 %
Correct Answer
D
Correct Option:
Sand ≈ 43.5 %, Silt ≈ 34.8 %, Clay ≈ 21.7 %

About This Question

This is Waec Model Questions Vol1 2021 Geography Question 30. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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