2017 · Q86
The following bar chart shows the number of boys and girls studying four subjects. Mathematics: 150 boys, 90 girls; Physics: 180 boys, 120 girls; Statistics: 70 boys, 250 girls; Chemistry: 136 boys, 204 girls. What is the total number of boys studying Statistics and Physics ?
Elementary MathematicsStatistics
- A180
- B240
- C250
- D310
Explanation
Read only the boys' bars for the two named subjects: Statistics has 70 boys and Physics has 180 boys. Their total is 70 + 180 = 250. The girls' figures (250 in Statistics, 120 in Physics) are a classic distractor — the question asks for boys only. Adding the wrong columns would give 370 or 430, neither of which is an option. Hence option (C) 250.