4MA0 Foundation January 2018 Paper 2 Q7

EdexcelFoundationOld spec8 marksForming Equations

7 You can use this rule to work out the number of minutes it takes to cook a piece of meat.

15 minutes
plus
40 minutes for every 500 grams the piece of meat weighs

A piece of meat weighs 1500 grams.

(a) Use the rule to work out the number of minutes it takes to cook this piece of meat. (3)

It takes \(3\dfrac{1}{4}\) hours to cook a different piece of meat.

(b) How much, in grams, does this piece of meat weigh? (3)

Becky is going to cook a chicken.
She knows that it needs to be in the oven for 1 hour and 50 minutes.
Becky wants to take the chicken out of the oven at 13 30

Scheme	Marks
1500 ÷ 500 (= 3) or 500 + 500 + 500 oe	M1
“3” × 40 + 15	M1
135	A1
	(3)

Mark scheme (b)

Scheme	Marks
\(\dfrac{180}{40}\;(= 4.5)\)	M1
e.g. \(\dfrac{180}{40} \times 500\)	M1
2250	A1
	(3)

Notes

M1: or ft from (a) eg. \(3 \times 60 + 15 - \text{“}135\text{”}\;(= 60)\)

M1: complete method or \(\dfrac{\text{“}60\text{”}}{40} \times 500 + 1500\)

A1: [SCB1 for \(\dfrac{195}{40} \times 500\) or \(\dfrac{190}{40} \times 500\) seen as working]

Scheme	Marks
11 40 (am)	B2
	(2)