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Define the original cost as 100%.

So £16=85% (100-15) of the original cost.

Find 1% of the original cost by dividing both sides by 85. 

16/85=85/85%

To find the orginal cost, 1...

This is a common question, as in English we generally same someone plays a sport, but the verbs vary in Mandarin. An easy way to remember the correct verb for the corresponding sport is t...

For English, it is key to not get overwhelmed with memorising poems or passages from the texts that you're studying. Make sure you have read through any texts that you are covering at least twice and anno...

So we know that 3/5 teachers in the school are female, and we also know that 36 teachers are male. 

The first thing to note is that if 3/5 are female, that leaves 2/5 to be male. This is because al...

In general, the imperfect tense is used to describe uncompleted actions whereas the perfect tense is applied when an action is complete. 

1. The imperfect explains what happened with no referenc...