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primary 6 | Maths
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help pls
Date Posted: 2 years ago
Views: 247
(37-1×11)÷(13-11)
= 13 (Ans)
If you don't want to use algebra
= 13 (Ans)
If you don't want to use algebra
case 1 -
(total cost of water tumblr) ÷ (no. of water tumblr) = $11 (from question)
case 2 -
(total cost of water tumblr + $37) ÷ (no. of water tumblr + 1) = $13 (from question)
let y be the no. of water tumblr bought.
case 1 -
(11 x y) ÷ y = $11
11y ÷ y = $11
case 2 -
(11y + $37) ÷ (y + 1) = $13
11y + $37 = 13 (y+1)
11y + $37 = 13y + 13
11y - 13y = 13 - 37
-2y = -24
2y = 24
y= 24 ÷ 2 =12 (answer)
c h e c k
(12 x $11)/12 = $11
(12 x $11 + $37)/ (12+1)= $13
(total cost of water tumblr) ÷ (no. of water tumblr) = $11 (from question)
case 2 -
(total cost of water tumblr + $37) ÷ (no. of water tumblr + 1) = $13 (from question)
let y be the no. of water tumblr bought.
case 1 -
(11 x y) ÷ y = $11
11y ÷ y = $11
case 2 -
(11y + $37) ÷ (y + 1) = $13
11y + $37 = 13 (y+1)
11y + $37 = 13y + 13
11y - 13y = 13 - 37
-2y = -24
2y = 24
y= 24 ÷ 2 =12 (answer)
c h e c k
(12 x $11)/12 = $11
(12 x $11 + $37)/ (12+1)= $13
See 1 Answer
done
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not sure if you’ve learnt algebra, but hope this helps!
Date Posted:
2 years ago
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