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- Tenses in English
Present I go.
Past I went.
Future I shall/will go.
Simple Present I finish the work at 8 p.m.
Present Perfect I have finished the work.
Present Perfect Continuous I have been doing the work since afternoon.
[ In the above examples, simple present is represent an even as is basis. Evergreen truth is also represented by simple present, e.g., sun rises from east. Near future event is also represented by simple present tense.
Present perfect tense represents that an action has completed but that's effect is still present
Present perfect continuous tense is used to represent those work that are still continuing from an definite period.]
Simple Past The doctor came.
Past Perfect The doctor had come after the patient died.
Past Perfect Continuous
Simple Future You will live there.
Future Perfect
Future Perfect Continuous You will have been living there when I will met you.
[We've already discussed what the simple, perfect, and past perfect tenses mean. The same logic applies to past and future tenses. For example, the past perfect tense indicates that an action was completed but its effect remained at that time (in past time). Similarly, future perfect continuous tenses indicate that an event will be occurring for a particular time period in the future.]
Q. 25 horses 5 bags of corn in 12 days. how many bags of corn will 9 horses eat in 20 days
A. Bags of corn (say, b) is inversely proportional to number of hoses (say, h) and number of days (say, d).
So, b/hd = constant
or, 5/25*12 = x/9*20
or, x =