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What must be added to the two numbers, which are in ratio 5: 12, so that the new ratio becomes 3:4?

5
8
12
16
Explanation:

Let x be the required number.

Then, According to the question,

=> (5+x)/(12+x) = 3/4

=> 20 + 4x = 36 + 3x.

=> x = 16.

Additional Questions

Today, the age of a father is thrice the age of his son. After 5 years the age of father will be 2.5 times the age of his son. What is the age of son today?

Answer

In a school the ratio of boys and girls are in the ration 5:6. 25% of boys will get scholar ship and 20% of girls will get scholar ship what % of students wont get scholarship?

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A and B can together finish a work in 30 days. They worked at it for 20 days and then B let. The remaining work was done by A alone in 20 more days. B alone can do the entire work inoption

Answer

A sum of money at simple interest amounts to Rs. 2240 in 2 years and to Rs. 2600 in 5 years. What is the principal amount?

Answer

If a man rows at the rate of 6 kmph in still water and his rate against the current is 4.5 kmph, then the man`s rate along the current is:

Answer

Rs.900 is divided among Maya, Annie, Saiji so that Maya receives half as much as Annie and Annie half as much as Saiji. Then Saiji`s share is:

Answer

A rectangular carpet has an area of 60 sq.m. If its diagonal and longer side together equal 5 times the shorter side, the length of the carpet is:

Answer

Robert Bosch Logical Reasoning Test

Analogy:

Apostate: Religion ::? ?

Answer

Analogy:

Embarrassed: humiliated :: frightened:?

Answer

Syllogism:

Statement:

No trunks are ivories.

No toes are trunks

Conclusion:

(1) all toes are ivories

(2) some trunks are ivories

Answer
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