Answer:
£2080.00
Step-by-step explanation:
4.2%*4= 16.8%
16.8%*2500= 420
2500-420= 2080
Answer: 691
Step-by-step explanation:
(17 + 6 + 9) × (19 + 16) - 19 × 7 - 6 × 4 - 16 × 17 = 691
Answer:
240
Step-by-step explanation:
You fist multiply the area by two. Then you divide that by the height.
Quantity equation: t + s = 48kg
Copper equation: 23t + 79s = 44*48
Multiply the quantity equation by 23 to set the problem up for the elimination method.
23t + 23s = 23*48
23t + 79s = 44*48
Subtract to solve for s.
56s = 21*48
s = 18 [Number of 79% bars needed]
t = 48 - 18 = 30 [Number of 23% bars needed]