Question
A container has 40 litres of a mixture of milk and
water in the ratio 3 : 1 . How many litres of water must be added so that the new ratio of milk to water becomes 3 : 2 ?Solution
Milk = (3/4) × 40 = 30 L Water = 10 L Let x litres of water be added. New water = 10 + x Required ratio: 30 : (10 + x) = 3 : 2 30 / (10 + x) = 3 / 2 Cross-multiply: 60 = 3(10 + x) 60 = 30 + 3x 3x = 30 → x = 10 L
Statement
Only a few Pink is Black
Some Black is White
All White is Red
Conclusion
I) Some Black is Red
Statements:
Each car is bus.
Only few bus are train.
No bus is cycle.
Conclusions:
I. At least some car are train.
Statements:
Some roses are sunflowers.
Some sunflowers are lotus.
Conclusions: ...
Statements:
Some year are day.
Each year is month.
Only day are week.
Conclusions:
I. Some month are week.
II. Some month are year.
III. No year is week
Statements: Some news are telecasts.
All telecasts are satellites.
All satellites are emissions.
Conclusions: ...
Statements :Some files are folders.
Some folders are envelopes.
Some envelopes are letters.
Conclusions :I. Some letters are folder...
Statement:
Some Rugs are Mats
Only Mats is Curtain
Only a few Mats are Pillow
Some Pillow are not Towel.
C...
Statements: All covers are glasses.
Some caps are covers.
No cup is a cap.
Conclusions: I. Some cups are not...
Statements: All pens are papers.
Some papers are not books.
All books are pencils.
Conclusions...
Statements:
All pinks are blacks
Only a few blacks are greens
Some greens are not whites
Only a few whites are orange
...
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