Ratio and Propo...

The Simplest form of 144:28 is

A jar contains black and white marbles. If there are 25 marbles in the jar, then which of the following could not be the ratio of black to white marbles?

A farmer has enough food to feed $$20$$ animals in his cattle for $$6$$ days. How long would the food last if there were $$10$$ more animals in his cattle?

To make a cup of tea, the ratio of water to milk is $$3: 1$$. To make $$4$$ cups of tea the ratio of water to milk is : 

A loaded truck travels $$14$$ km in $$25$$ minutes. If the speed remains the same, how far can it travel in $$5$$ hours?

In a school the total number of students are $$3200$$ out of which $$1800$$ are boys. Remaining are girls. Ratio of number of girls to boys is:

Ratio of $$250$$ ml to $$2$$ L is

I consume $$7$$ chapatis at lunch and $$8$$ chapatis at dinner. How many dozen chapatis do I consume in a leap year?

In an office, the working hours are $$10.30$$ AM to $$5.30$$ PM and in between $$30$$ minutes are spent on lunch. Find the ratio of office hours to the time spent for lunch.

Mala and Bala got $$75$$ marks and $$25$$ marks respectively in an examination. The ratio of the marks scored by Mala to the total marks obtained by both of them is