Answer:
Step-by-step explanation:
1. Mathew earns each month = $5000
Mathew spent every month = $3750
so, percentage of money that Mathew spent
= (money spent ÷ total money of every month) ×100
= (3750 ÷ 5000) ×100
= 75%
hence, Mathew spent 75% every month
2. selling price of websites that Tifton sell = $3500
commission makes by Tifton on the websites = 35%
so, commission make by Tifton = percentage of commission × selling price of website
= 35% × 3500
=(35 ÷ 100) × 3500
= $1225
so, commission make by tifton on the websites is $1225
3. cost of 42 inch TV = $1250
sale on 42 inch TV = 15%
so, the cost of TV after sale = cost of TV - percentage of sale
= 1250 - (15 ÷ 100) × 1250
= 1250 - 287.5
= $1062.5
now, sale tax on TV = 6.5%
so, the cost of TV after sale tax = cost of price after sale + percentage of sale tax
= 1062.5 + (6.5 × 1062.5) ÷100
= 1062.5 + (65 × 10625) ÷10000
= 1062.5 + 69.0625
= $1131.5625
hence, the final cost of TV is $1131.5625
4. weight of metal bar = 8.15 ounces
silver bar in the metal bar = 93%
so, weight of silver = percentage of silver bar × weight of metal bar
=93% × 8.15
=(93 × 8.15) ÷ 100
= (93 × 815) ÷10000
= 75795 ÷ 10000
=7.5795
hence, 7.5795 ounces of silver bar is in the metal bar
5. construction - draw a parallel line GF from point G to touch on EB at F
solution - now, CF║FG and CE = FG
hence , CEGF is a rectangle
so, CE = FG (l) = 20 cm
and CG = EF (b)= 10cm
therefore area of rectangle = l×b
= 20×10
= 200cm²
height of triangle GFB = 20 cm
and BF base of triangle = 30 -10
= 20 cm
therefore, aera of ΔGFB = 1/2 ×b×h
= 1/2×20×20
= 1/2×10×20
= 200cm²
so, area of figure = area of rectangle + area of triangle
= 200 cm² + 200 cm²
= 400cm²
