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Primary 4 | Maths
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Pls help!!!!
90c for curry bun; 110c for sardine bun
Total is 1040c, not 1100c.
Pretend he buys 10 sardine buns. Then he pays 1100c.
For every 1 sardine buns swapped with 1 curry bun, he pays 20c less because he pays 90c instead of 110c.
1 curry, 9 sardine is 1080c
2 curry, 8 sardine is 1060c
3 curry, 7 sardine is 1040c
so he bought 3 curry buns and 7 sardine buns.
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