Question
In the figure given below, PQRS is a parallelogram in
which PN and PM are perpendicular to QR and RS, respectively. If RS = 81 cm, PM = 42 cm and PN = 56 cm, then find the value of QR.Solution
Area of parallelogram = base X (height of the corresponding altitude)So, RS X PM = QR X PNOr, 81 X 42 = QR X 56Or, QR = (3,402/56) = 60.75 cm
20 men can complete a piece of work in 40 days. ‘x’ men started the work and after 35 days 64 more men joined them so that whole work was finished i...
- 40 women working 10 hours a day take 12 days to complete a project. How many women working for 7 hours a day are needed to complete twice the given project...
40 men take 15 days to finish some work. If the work is to be finished in 8 days, then how many additional men should be hired?
'Alex,' 'Ben,' and 'Charlie' can individually complete a task in 40, 60, and 100 days, respectively. They decide to work together, but there's a unique ...
25% of the work done by Arjun in 6 days equals 50% of the work done by Karan in 3 days. If Arjun alone finishes the full work in 24 days, find the time ...
‘A’ alone can complete a work in 10 days. ‘B’ alone can complete the same work in 20 days. If ‘A’ and ‘B’ work together for 3 days, then...
The ratio of time taken by P, Q and R to complete work alone is 4:5:3 respectively. If all three together complete the work in 6 days, then find in how ...
Q can complete a project in ‘x ‘ hours , R needs ‘0.7x’ hours to do half of The same project. R and S jointly can complete the same project in 1...
A can finish a work in 12 days and B can finish the same work in 18 days. They work together for 4 days and then B leaves. In how many more days can A a...
A and B can complete a work together in 36 days. If A alone can complete one-fourth of the work in ‘x’ days and remaining work is completed ...
