gran has four coins in her purse.only one of the coins is circular.what diffrerent amounts of money could she have?
2007-04-27 07:53:04 · 13 answers · asked by mark100414 1 in Education & Reference ➔ Home Schooling
3x50+1p=£1.51
3x50+2p=£1.52
3x50+5p=£1.55
3x50+10p=£1.60
3x50+£1=£2.50
3x50+£2=£3.50
3x20+1p= 61p
3x20+2p=62p
3x20+5=65p
3x20+10=70p
3x20+£1=£1.60
3x20+£2=£2.60
2x50p+20p+1p=£1.21
2x50p+20p+2p=£1.22
2x50p+20p+5p=£1.25
2x50p+20p+10p=£1.30
2x50p+20p+£1=£2.20
2x50p+20p+£2=£3.20
2x20p+50p+1p=91p
2x20p+50p+2p=92p
2x20p+50p+5p=95p
2x20p+50p+10p=£1
2x20p+50p+£1=£1.90
2x20p+50p+£2=£2.90
2007-04-27 08:11:29 · answer #1 · answered by bumblecherry 5 · 1⤊ 0⤋
Well, 50ps and 20ps are the coins we have that are not circular. She can have:
3 20p coins or
2 50ps and 1 20p, or
2 20ps and 1 50p, or
3 50p coins,
along with the fourth, circular coin.
There are 6 coins that are circular:
1p
2p
5p
10p
£1
£2
For each of these coins, there are the 4 combinations of 20ps and 50ps as above,
Therefore there are 6 x 4 = 24 different amounts of money.
e.g.
1p 20p 20p 20p
1p 20p 20p 50p
1p 20p 50p 50p
1p 50p 50p 50p
If you are looking for the actual amounts of money rather than just the combinations of coins, it would be as follows:
20p + 20p + 20p = 60p
20p + 50p + 50p = £1.20
20p +20p + 50p = 90p
50p + 50p +50p = £1.50
so add these amounts to each of the circular coins to find the possible amounts of money,
e.g with a 1p coin in the purse, there could be:
61p
£1.21
90p or
£1.51
with a 2p coin in the purse, there could be:
62p
£1.22
92p or
£1.52
and so on.
Hope this helps!
2007-04-27 08:03:12 · answer #2 · answered by Funky Little Spacegirl 6 · 0⤊ 0⤋
If only one is circular - she must have a 50p, a 20p (both heptagons) - and probably an old threpenny bit from before decimalisation in 1978, which had about 6 sides. All other UK coins are round.
2007-04-27 08:05:18 · answer #3 · answered by originalfinchy 1 · 0⤊ 0⤋
The circular coin could be a 1p, a 2p, 5p, 10p, £1 coin, or £2 coin and the other three 20p's or 50p's.
2007-04-27 08:00:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
2 50s a 20p and a10p
2007-04-27 07:57:48 · answer #5 · answered by Anonymous · 0⤊ 1⤋
20p 20p 50p £2
2007-04-27 08:04:35 · answer #6 · answered by ♥♥♥ 5 · 0⤊ 0⤋
You ought to check that purse and see that she hasn't still got a three-penny bit from the days of Sterling currency. (£ s d, or pounds, shillings and pence.)
2007-04-27 14:24:16 · answer #7 · answered by micksmixxx 7 · 0⤊ 0⤋
What country?
2007-04-28 20:26:22 · answer #8 · answered by Wise ol' owl 6 · 0⤊ 0⤋
2 shillings sixpence
2007-04-28 05:22:16 · answer #9 · answered by Anonymous · 0⤊ 0⤋
10p 5p £1 £2 that's iht lol.
2007-04-27 07:57:50 · answer #10 · answered by weecee1690 1 · 0⤊ 1⤋