Question
If 30 – 22 means 660, 220 + 11 means 20, 14 ÷ 7 means
21, 15 x 12 means 3, then ' 333 – 8 x 255 ÷ 490 + 7 x 32 ' = ?Solution
Given that: 30 – 22 = 660. But actually 30 x 22 = 660. So, – means x. Given that: 220 + 11 = 20. But actually 220 ÷ 11 = 20. So, + means ÷. Given that: 14 ÷ 7 = 21. But actually 14 + 7 = 21. So, ÷ means +. Given that: 15 x 12 = 3. But actually 15 – 12 = 3. So, x means –. Given expression = 333 – 8 x 255 ÷ 490 + 7 x 32 =? 333 x 8 – 255 + 490 ÷ 7 – 32 2664 – 255 + 70 – 32 2447
Working alone, 'C' can complete a job in 30 days. 'D' takes 20% less time than 'C' to finish the same job. Calculate the percentage of work done by 'C' ...
- If Riya takes three times the time that Mahi takes or four times the time that Neha takes to finish a task, and all three working together can complete it ...
- Pipes X and Y can fill a water tank individually in 24 minutes and 36 minutes, respectively. A third pipe Z can empty the tank in 72 minutes. If all three ...
A can complete a piece of work in 24 days. He worked for 21 days and then B finished the remaining work in 6 days. In how many days can A and B finish t...
A can complete a piece of work in 10 days , and B can complete the same work in 15 days . They start working together, and after some days A leaves....
The ratio of time taken by P, Q and R to complete work alone is 4:6:3 respectively. If all three together complete the work in 8 days, then find in how ...
18 women can do piece of work in 12 days. 12 men can do the same piece of work in 9 days. Find in how many days will 8 men and 8 women complete that work?
A and B together, B and C together and A and C together can complete a piece of work in 14 days, 15 days and 18 days respectively. Find the ratio of the...
Q can do a work in 15 days and R can do the two-third work done by P and Q together in a day. If R completes the work in 18 days, how many days will it ...
A' can finish a job in 24 days, while 'B' is 25% less efficient than 'A.' If they take turns working, beginning with 'A,' how many days will it take for...