Acomputer is on sale from two different internet sites. site a sells it for $1,250 plus free shipping. they offer a 20% discount with an internet coupon. site b sells the same computer for $1,000 plus a $20 shipping charge

Site a:

$1250 and 20% discount.

Since a 20% discount is given, the price is 100% - 20% = 80% of the price.

Price = 80% of 1250 = (80/100)*1250 = 0.8*1250 = 1000

Price = $1000

Site b:   $1000 + $20 = $1020.

Hence site a is cheaper than site b. 

We are given : Ibrahim owns a plot of land measuring = 15 acres 27 square yards.

Area of the sold plot = 7 acres 16 square yards.

Remaining land after selling plot = Total land Ibrahim owns - Area of the sold plot.

Plugging values, we get

Remaining land after selling plot = 15 acres 27 square yards - 7 acres 16 square yards.

  15 acres 27 square yards

-  7 acres 16 square yards

8 acres 11 square yards.

Therefore, Ibrahim's plot land remains 8 acres 11 square yards.