MA-441
Rate and speed problems
Lower Sec Maths · Secondary 1 · Hard · Rate and speed problems
Meng can wrap 6 presents in 1.5 hours. Wei can wrap 10 presents in 2 hours. If they work together at the same rates, how long will they take to wrap 64 presents?
- 7.1 hours (correct to 1 d.p.)
- 6.4 hours (correct to 1 d.p.)
- 9.0 hours (correct to 1 d.p.)
- 11.3 hours (correct to 1 d.p.)
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