Maths help please I’m so dull

This question is really easy but I’m really dull and I’ve had 5 mental breakdowns over this so please help me, thank you soooooo much.

(Working out please if possible)

The total cost of 0.6kg of grapes and 0.5kg of apples cost £1.36. The grapes cost £1.45 per kg. Find the cost of 1kg of apples.

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Reply 1

Baza2002

£1.45 = 145p
145 x 0.6 = 87
£1.36 = 136p
136 - 87 = 59
1 / 0.5 = 2
59 x 2 = 118
118p = £1.18
Answer = £1.18

Reply 2

Rebeca j

Thank you sooooo much

Reply 3

Baza2002

Original post by Rebeca j

Thank you sooooo much

How old are you?

Reply 4

username3818132

Form simultaneous equations:

g - grapes
a - apples
converted pounds to pennies to make life easier

0.6g + 0.5a = 136 ---(Equation 1)
g = 145 ---(Equation 2)

Substitute g into equation 1 and you should get
87 + 0.5a =136

make a the subject
0.5a = 136 - 87
a = (136-87)/0.5
a=98

therefore 1kg of apples cost 98p hence £0.98

Reply 5

callum521

Okay, I think I know but I'm not expert in maths. So I calculated 0.1kg of grapes = 1.45/10 = £0.145. Then to find 0.6kg of them I multiplied by six, so £0.145 x 6 = £0.87. Then we find out how much 0.5kg of apples cost so £1.36 - £0.87 = £0.49 per 0.5kg of apples. So then we multiplied by two to get 1kg of apples so £0.49 x 2 = £0.98. Hopefully, this helps.