I. xy + 2y=3 Not linear equation because is grade 2 equation (xy).
II. x-2y = y Are linear equations in two unknowns (x and y).
III. 3x + 2y = 5 Are linear equations in two unknowns (x and y).
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Corect ansver: C) II and III only</h2><h2>
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5 1/4 divided by 1 3/8 in decimal form is 3.818!
0.625 = 0.625 / 1
Numerator = 0.625 × 10 × 10 × 10 = 625
Denominator = 1 × 10 × 10 × 10 = 1000
Numerator / Denominator = 625 / 1000
Our simplifed fraction is:
= 625/1000
= 5/8
1ml of 80ml bottle: 55/80 = 0.6875 pence
1ml of 50ml bottle: 45/50 = 0.9 pence
If no special offer the first bottle is a better value for money.
Since special offer though, you'd be buying;
50ml bottle £45 + another 50ml £22.5 = £67.5 in
which case 1ml would cost;
67.5/100 = 0.675 pence. Hence buying 2x50ml
bottle would be a better value.
