Question
If ‘−’ stands for ‘÷’, ‘+’ stands for
‘×’, ‘÷’ stands for ‘−’ and ‘×’ stands for ‘+’, then 80 − 20 + 10 ÷ 8 × 10 is equal to:Solution
The correct answer is A
'X' and 'Y' together can complete the work in 16 days. 'Y' alone can complete the work in 24 days. If Z is 50% more efficient than X, find the time tak...
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