Ratio & Basic Proportion: WJEC GCSE Intermediate November 2020 Unit 1 Q13

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Intermediate November 2020 Unit 1 Q13

WJECIntermediateCurrent spec4 marksRatio & Basic Proportion

13. A sum of money is shared in the ratio 3 : 4 : 7.
The smallest share is £210.

What is the total amount of money shared?
You must show all your working. [4]

Mark scheme

Scheme	Marks	Comments
(One part =) (£)210 ÷ 3	M1
= (£)70	A1
(Total amount =) 14 × (£)70 OR (£)210 + 4 ×(£)70 + 7 × (£)70	m1	FT ‘their (£)70’ only if M1 gained. Allow m1 for sight of 210 AND 280 AND 490 together as the three shares.
= (£)980	A1	For 210 ÷ 3 × 14 M3 = 980 A1