Answer:
D. 
Step-by-step explanation:
Given:
Required:
Find its equivalent expression
Solution:
Add both fractions
Thus,
Therefore,
Answer:
$22.50....................
Hmm...this is difficult. The first thing I can think of is the relationship between age and time.
Answer:
Divide by 4 to get the mass of a single bag and then multiply by 1000 to get to grams from kilograms
Step-by-step explanation:
6/4=1.5
1.5*1000=1500
So, in total a bag of sugar would cost 1500
This is basically a system of 3 linear equations with variables x, y and c.
x+y = 6...................................(1)
5x/3 + y = c .........................(2)
2y = c-4x .............................(3)
(2)-(1)
5x/3-x +y-y = c-6 => 2x/3 = c-6 => x = (3/2)(c-6)=3c/2-9 ..............(4)
(3) - 2(2)
2y-2y - 10x/3 = c -4x -2c
=> 2x/3 = -c
=> x = -(3/2)c.............................................................................................(5)
Finally, equate (4) & (5) to get
3c/2-9 = -3c/2
=>
3c = 9
=> c=3
