Question
Download Solution PDFThe following bar graph shows number of students from different schools who have a hobby of Singing, Dancing and Drawing. Each student is interested in playing only on
If the number of students who are interested in Singing from all the colleges is increased by 20% and the number of students who are interested in Drawing from all the colleges has decreased by 10% , then ratio of number of students who are interested in Singing to that of who are interested in Drawing?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculations:
Total students interested in Singing = 340 + 250 + 450 + 300 + 280 = 1620
Increase in Singing students = 1620 × 20% = 324
New total students interested in Singing = 1620 + 324 = 1944
Total students interested in Drawing = 260 + 180 + 170 + 200 + 320 = 1130
Decrease in Drawing students = 1130 × 10% = 113
New total students interested in Drawing = 1130 - 113 = 1017
Ratio of new Singing students to new Drawing students:
Ratio = 1944 : 1017
Ratio = 216 : 113
∴ The ratio is 216 : 113.
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