Mako? The marked price of a watch is 30% above the cost price. When it is sold allowing
20% discount on it, there is a gain of Rs 150. Find the marked price and the cost
price of the watch.
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When

The marked price of the watch is Rs 4875 and the cost price is Rs 3750

Explanation:

Let the cost price of the watch be Rs. y and the marked price of the watch be Rs. x.

The marked price of a watch is 30% above the cost price, therefore the marked price of the watch (x) = y + 30% × y = y + 0.3y = 1.3y.  

The watch is sold at 20% discount, this means it is sold at x - 20% × x = x - 0.2x = 0.8x.

When sold at 20% discount, there is a gain of Rs 150. Therefore:

0.8x = 150 + cost price

0.8x = 150 + y

but x = 1.3y

0.8(1.3y) = 150 + y

1.04y = 150 + y

1.04y - y = 150

0.04y = 150

y = 3750

Since x = 1.3y = 1.3(3750) = 4875

Therefore the marked price of the watch is Rs 4875 and the cost price is Rs 3750

explanation:

it's important for any number of settings.   but then i'm a retired teacher and my view may be biased.

it certainly will not weigh as a minus when applying to a college, while poor grades always work against you.

other factors are important like what you do to improve the community.